Question 1

Is this just a recipe book?

Accepted Answer

No. Each book opens with a full safety and hygiene protocol, and the soapmaking volume spends seven chapters on theory — fragrance, essential oils, the gel phase, additives, cure times, infused oils and soap-calculator values — before the first recipe.

The recipes themselves are built for learning: ingredient functions, phase-by-phase methods, target temperatures and pH, shelf life, and a troubleshooting FAQ for every formula. The author closes the soap book with the idea behind the whole series: “Do not become dependent on recipes. Learn to understand formulas.”

Question 2

Who are the books for?

Accepted Answer

Anyone who wants to make natural skincare, soap or candles and understand what they're doing — from complete beginners (the books state that no prior experience is needed) to makers who already have a routine and want more consistent results. Later soap recipes are marked as advanced, so there's room to grow.

Question 3

Is it suitable for complete beginners?

Accepted Answer

Yes. Safety comes first, every step is spelled out with temperatures and weights, and common mistakes are explained in each recipe's FAQ. A few techniques — such as very high lye concentrations — are flagged for experienced makers only.

Question 4

Which book should I start with?

Accepted Answer

Start with the craft you want to make. The Big Book of Homemade Soap is the most theory-heavy and the best grounding in how ingredients react. The Big Book of Homemade Skin Care teaches emulsions, pH, preservation and actives through sixteen formulas. The Big Book of Homemade Hair Care is the one to take if you want shampoos and treatments, because it teaches surfactant chemistry properly. The Big Book of Sweet Dessert Candles covers waxes, wicks and temperatures before its projects. If you want both soap and face care, The Big Book of Homemade Products carries them in one volume for less than the two books cost separately. Not sure? Find your starting point .

Question 5

How are the books different?

Accepted Answer

They share an author, a safety-first approach and a teaching style, but each covers its own craft. Every book opens with the same professional hygiene and sterility protocol.

The soap book then goes deep into theory: gel phase, curing, additives, calculators. The skin care book is organized formula by formula, each with phases, INCI names and a target pH. The hair care book starts from surfactant chemistry — the shampoo matrix, active matter, rheology — before its nine formulas. The candle book is more visual and project-based, and adds a section on home fragrance and perfume. The Big Book of Homemade Products is the combined edition of the soap book and the face half of the skin care book.

Question 6

What will I actually learn?

Accepted Answer

How to work safely and hygienically; how ingredients behave and why each one is in a formula; how emulsions, gels and anhydrous products are built; how pH and preservation keep products effective and safe; how saponification, superfat, trace, the gel phase and curing shape a bar of soap; and how wax type, wick size, fragrance load and temperature determine how a candle burns.

Question 7

Do the books cover ingredients and raw materials?

Accepted Answer

In depth. The skincare formulas list INCI names and the function of every ingredient; the soap book profiles oils, butters, additives, colorants and ten essential oils; the candle book covers coconut, soy and beeswax, gel, wicks, dyes and natural waxes. Our ingredient glossary draws on all of it.

Question 8

Do they explain the reasoning behind each formula?

Accepted Answer

That's the point of the series. You'll learn why a cleanser sits at pH 4.5–5.5, why peptides go in below 40 °C, why a coconut bar can carry a 20% superfat when an olive bar can't, and why container wax fails in a pillar mold.

Question 9

Do they cover troubleshooting?

Accepted Answer

Yes. Every soap recipe has its own FAQ — seizing, ricing, soda ash, partial gel, scorched milk, crumbly hot process. The candle book covers wet spots, uneven or cracked tops, tunneling, flaring and failed whipped toppings. The skincare book covers grainy butters, rancid oils, fizzing bath salts and oxidized copper peptides.

Question 10

What topics are included?

Accepted Answer

The Big Book of Homemade Soap — safety, seven theory chapters and ten cold- and hot-process recipes. The Big Book of Homemade Skin Care — a safety protocol and sixteen formulas: cleansers, creams, facial oil, toner, peptide serum, eye complex, body butters, scrubs, bath salt, firming gel and shower gel. The Big Book of Homemade Hair Care — the shampoo matrix and the formulator’s mindset, then nine formulas: a liquid shampoo, four solid shampoo bars, a repair mask, a conditioning balm, a scalp spray and a dry hair oil. The Big Book of Sweet Dessert Candles — waxes, wicks, dyes, gel and troubleshooting, ten dessert-inspired projects, plus solid perfumes, reed diffusers and a massage candle. The Big Book of Homemade Products — the combined edition: the whole soap book plus the nine face formulas from the skin care book. See Books for the full contents.

Question 11

Where should I start if I'm completely new?

Accepted Answer

Start with the safety protocol — it opens every book and applies to everything that follows. Then choose one craft. In soapmaking, read the theory chapters before any recipe. In skincare, the first formula, a chamomile foam cleanser, is made without heat or emulsifying. In candles, begin with the basics — waxes, wicks and temperatures — and the first project, a decorative container candle.

Question 12

Can I use the books for self-study?

Accepted Answer

Yes. They're written as self-contained manuals: step-by-step protocols, exact weights and temperatures, and a question-and-answer section with each recipe. The author describes the book as “a foundational manual and a trusted companion on your path to mastering natural formulation.”

Question 13

Do I need special equipment?

Accepted Answer

A few precise tools matter more than anything fancy. For soap: a digital scale accurate to 0.1 g, heat-resistant containers, a stick blender, a thermometer, pH strips, molds, and protective gear — goggles, nitrile gloves, a respirator for powders and long sleeves. For skincare, add a mixer and a way to sterilize tools. For candles: a double boiler, a kitchen thermometer and scale, wicks with holders and stickers, glasses or silicone molds, and ideally a heat gun.

Question 14

Can I make products to sell?

Accepted Answer

The books give you a foundation, not a license. As the skincare book notes, products for sale need additional stability, microbiological and safety testing, plus regulatory and packaging assessment. Check the rules in your market before selling anything.

Question 15

Why is my candle tunneling?

Accepted Answer

The wick is usually too small for the container, so the melt pool never reaches the edges. Short burns make it worse. In the book's wick test, a correctly sized wick melts the whole surface to the edges within 1.5–2 hours, with a melt pool about 1 cm deep. If there's no full melt pool after 2 hours, or the candle tunnels, the wick is too small, and the scent throw will be weak too. How you burn matters as well. Each session should last 1.5–2 hours so the whole top layer melts, but no more than 3 hours at a time.

Question 16

How do I choose a candle wick?

Accepted Answer

Match the wick to the container's diameter and your wax, then confirm it with a burn test. The book calls this one of the hardest parts of candle making. The right wick gives good fragrance throw and a safe burn. In the book's projects: a 250 ml glass takes a 24-strand braided cotton wick or a wooden wick; a 13 cm cake mold takes a 45-strand braided wick; a botanical pillar 10–11 cm across takes a 24-strand wick; a small 3–7 cm container needs at least a 10-strand wick. With stones as decoration, wooden or cotton both work. With dried flowers, use braided cotton only, because other wicks risk strong flaring.

Question 17

How do I test a wick?

Accepted Answer

Cure the test candle 7 days, light it and time the melt pool: it should reach the edges in 1.5–2 hours at about 1 cm deep. 24 hours after pouring, trim the wick to 0.5 cm, close the jar and let it cure 7 days. Note the wick brand and size, jar diameter, wax brand and fragrance %. Then light it and watch how long the melt pool takes to reach the edges, and how deep it is after 2 hours. Deeper than 1 cm and melting fast means the wick is too large; it may flare if burned for 6 hours. No full melt pool after 2 hours, or tunneling, means it's too small.

Question 18

Why does my candle have wet spots?

Accepted Answer

Temperature changes as the wax sets: a cold room, a hot pour, a cold or thick-bottomed glass, drafts, or candles too close together. The book also names stirring too hard (trapped air) and using mold wax in a container. Glasses with uneven wall thickness, such as a heavy base, cool unevenly and are especially prone to wet spots. Pour when the wax turns cloudy and viscous, just about to set, into clean glasses warmed to about 40–50 °C. Cool them on a rack or wooden surface, not marble, at least 10 cm apart and away from drafts.

Question 19

Why is the top of my candle uneven or cracked?

Accepted Answer

Most often the pouring temperature. Vessel shape, fragrance amount and pouring speed also play a part. A heat gun fixes it after 24 hours. Wait 24 hours, then re-melt the surface with a heat gun held about 15 cm away at an angle, and poke into any cracks so the voids fill. A hair dryer is only a temporary substitute: it blows too much air, the wax 'remembers' the ripples it makes, and it's slow.

Question 20

What's the difference between container wax and pillar wax?

Accepted Answer

Container wax melts lower (about 43–47 °C) and clings to glass. Mold (pillar) wax melts at about 57–63 °C, is harder and smoother, and holds its shape as it burns. Each wax is designed for its job. A mold candle cast from container wax will, in the book's words, turn into 'a pool of oil on your table' when burned. Mold wax used in a jar causes wet spots because it doesn't adhere to the glass. The book's main wax is coconut wax, about 80% coconut oil and its derivatives and 20% other vegetable oils, available in both container and mold grades.

Question 21

How much fragrance should I use in a candle?

Accepted Answer

10–12% of the wax weight. For example, 19–22.8 g of fragrance in 180–185 g of coconut wax. Check the fragrance maker's instructions for the addition temperature. The book gives two options: 55–60 °C, or a higher 73–85 °C if the supplier says so. After adding it, stir slowly clockwise for 2–3 minutes without whipping in air. In several projects the fragrance goes in just as the wax at 55–59 °C starts to turn slightly cloudy. The cure matters too: 7–10 days lets the fragrance bind with the coconut wax and develop both cold and hot throw.

Question 22

How should I prepare and burn a new candle?

Accepted Answer

Let it set 24 hours, trim the wick to 0.5 cm, cure 7–10 days, then burn 1.5–2 hours at a time until the whole surface melts, never more than 3 hours. Container candles need 7–10 days before the first burn so the fragrance binds with the wax. Before every burn, trim and wipe the wick so burnt bits don't fall into the melt pool. For long sessions, put the candle out for 5–10 minutes every couple of hours. Never blow it out, or the smoky wick smell will mix with the fragrance next time. Use the lid or a snuffer.

Question 23

What are the key safety rules for candle making?

Accepted Answer

Melt wax only in a double boiler, never over an open flame, never let it exceed 85 °C, and smother any wax fire with baking soda, never water. The book says even small violations can have serious consequences. Keep small children away from the work, since stones, dried flowers, glitter, dyes and fragrances can end up in mouths. Read dye and fragrance instructions carefully and follow the maker's percentages and temperatures. Use cotton wicks with dried flowers to avoid flaring.

Question 24

Where should I start as a complete beginner?

Accepted Answer

Start with safety, then choose one craft and read its foundations before your first project. Every book opens with its safety chapter: The Non-Negotiable Protocol in the skincare and soap books, and Safety Rules in the candle book. It applies to everything that follows, so read it first. Then pick one craft. The soap book gives you seven theory chapters (fragrance, essential oils, the gel phase, additives, curing, infused oils and soap-calculator values) before any recipe. The candle book starts with its basics: waxes, wicks, temperatures and dyes. The skincare book's first formula, a chamomile foam cleanser, is a cold-mixed product with no emulsifying step.

Question 25

What equipment do I need?

Accepted Answer

A few precise tools: an accurate scale, a thermometer and the right protective gear matter most. For soap, the recipes rely on a digital scale accurate to 0.1 g, heat-resistant containers, a stick blender, a thermometer, pH strips and molds. Protective gear comes first: splash-proof goggles, nitrile gloves, a particulate respirator when weighing powders, a long-sleeved lab coat or apron and closed-toe shoes. Skincare uses the same precision tools, plus a mixer for emulsions and a way to sterilize everything that touches the product: a pressure cooker, a dry-heat oven or 70% isopropyl alcohol. For candles, the book's projects use a double boiler (a saucepan with a melting container), a kitchen thermometer, kitchen scales, wicks with holders and double-sided stickers, glasses or silicone molds, and a heat gun for finishing surfaces.

Question 26

What safety precautions do the books require?

Accepted Answer

The books treat safety as non-negotiable: full protective gear, a zoned and disinfected workspace, good ventilation and an emergency plan. The opening chapter puts it plainly: there is no home version of safety, only the correct protocol. Before touching any ingredient you cover your hair, wear splash-proof goggles when handling lye or acids, wear a particulate respirator when weighing fine powders, and wear a dedicated long-sleeved coat or apron and closed-toe shoes. Hands are washed, sanitized with 70% alcohol, gloved, and the gloves are sprayed with alcohol too. Surfaces are disinfected, wiped with alcohol and covered, and the space is split into a prep zone, an active formulation zone and a curing or packaging zone. Ventilation is confirmed before you start, and a spill kit, eyewash access and labeled waste containers are ready.

Question 27

How do I sterilize my tools and containers?

Accepted Answer

Follow the four-step sterilization chain: wash, rinse, disinfect or sterilize, then sanitize containers just before filling. Anything that touches the product goes through four steps. First, mechanical cleaning in hot soapy water. Second, rinsing with distilled or very hot water. Third, disinfection or sterilization: best practice is a pressure cooker or autoclave (15 minutes at 15 PSI) or a dry-heat oven (160 °C for 2+ hours); the standard option is immersing or wiping with 70% isopropyl alcohol and air-drying on a clean rack. Fourth, just before filling, spray the inside of each jar and its threads with alcohol and let it evaporate.

Question 28

How should I approach formulation as a beginner?

Accepted Answer

Learn the protocol, then learn what each ingredient does and why it goes in at a particular phase and temperature, before you start changing recipes. The skincare book is built around understanding. Every formula lists each ingredient's INCI name and function, groups ingredients into phases, and gives target temperatures, a target pH, shelf life and a 'key improvements' note that explains the formulation choices. Four foundations run through every product: hygiene (sterilized tools, a disinfected workspace), preservation (anything with water needs a broad-spectrum preservative), pH (matching skin's acid mantle, around 4.5–5.5) and patch testing. The first formula, a chamomile foam cleanser, is mixed without heat or emulsifying, which makes it an approachable first project.

Question 29

Why is pH important in skincare?

Accepted Answer

Healthy skin's acid mantle sits at about pH 4.5–5.5. Products in that range protect the barrier, and pH also decides whether some actives and preservatives work. Alkaline cleansers damage the skin barrier and leave it dry and vulnerable, so the book's cleansers and shower gel sit at pH 4.5–5.5. A lower pH also helps preservatives work better. Some actives need a specific window: salicylic acid only exfoliates below pH 4.5, which is why the toner targets 3.8–4.2, while copper peptides are sensitive to pH jumps and the serum sits at 6.0–6.5. The book's targets: cleansers 4.5–5.5; barrier cream 4.8–5.2; exfoliating toner 3.8–4.2; copper-peptide serum 6.0–6.5; firming gel 4.2–5.0.

Question 30

What is an emulsion, and how do I make a cream?

Accepted Answer

A cream is an oil-in-water emulsion: oil droplets held evenly through a water phase by an emulsifier. Both phases are heated to the same temperature and combined under high shear. The book's creams use emulsifiers such as Olivem 1000 or Emulsifying Wax NF (Polawax) at 3–5%, with cetearyl alcohol (1.5–2.5%) to thicken and stabilize. The method from the Barrier Repair Cream: heat the oil phase to 70–72 °C until clear. Heat the water phase to 70–72 °C as well, holding it there about 5 minutes. With both at the same temperature, pour the oil into the water in a thin stream while mixing at medium speed, then mix at high speed for 3–4 minutes. Cool while stirring slowly. Add actives at 38–40 °C and the preservative at 35 °C, adjust pH, keep stirring down to 25–28 °C, pack, and rest 24 hours.

Question 31

What are the phases in a formula?

Accepted Answer

Groups of ingredients handled together at the same stage: water phase, oil phase, actives, preservative and pH adjustment. The book uses a consistent structure. Phase A: water or hydrosols with water-soluble ingredients. Phase B: oils, butters and the emulsifier. Phase C: heat-sensitive actives added during cooling. Phase D: preservation. Phase E: pH adjustment. A typical cream in the book is 55–75% water phase, 15–27% oil phase (including 3–5% emulsifier), 2–8% actives, about 1% preservative, and pH adjuster as needed.

Question 32

What are active ingredients, and when do I add them?

Accepted Answer

Actives are the ingredients chosen for a specific effect, such as panthenol, peptides or niacinamide. Most are heat-sensitive, so they go into the cooling product at 38–40 °C. Examples from the book: D-panthenol for barrier repair, allantoin and bisabolol for soothing, niacinamide for sebum regulation, salicylic acid and Azeclair for problem skin, caffeine for puffiness, and peptides such as GHK-Cu, Argireline, Matrixyl and Progeline for aging concerns. Long exposure to heat can break them down, so they're added to the cooling emulsion, typically at 38–40 °C, before the preservative at about 35 °C. Peptides are stirred in by hand or on the lowest speed so high shear doesn't denature them.

Question 33

What is the purpose of a hydrosol?

Accepted Answer

Hydrosols replace some or all of the water in a formula and bring their own properties: soothing, toning, astringent or refreshing. In the skincare book, chamomile flower water (55.6%) is the soothing base of the foam cleanser. The toner combines witch hazel (a natural astringent for pores and oil), peppermint (refreshing, cooling) and rose hydrosol (soothing, softening acid irritation). Neroli hydrosol tones and balances in the anti-aging cream, and immortelle hydrosol forms the base of the firming gel. In soap, damask rose hydrosol replaces part of the liquid in the Fresh-Cut Rose bar. It's added to the oils, because hot lye water would destroy its compounds.

Question 34

Do I need a preservative?

Accepted Answer

Any product containing water does. Anhydrous products (oils, butters, scrubs, bath salts) don't, as long as water never gets in. Water, including hydrosols, lets microbes grow, so every water-containing formula in the book has a broad-spectrum preservative. The book names specific systems: Geogard Ultra (about 1%), Leucidal Liquid (2%, a 'natural' option), Geogard 221 (1%), Geogard ECT (0.5–1%, stable at acidic pH), Euxyl PE 9010 (0.8%) and LiquaPar Optima (0.8–1.2%). Caprylyl glycol boosts preservatives, and disodium EDTA protects peptides by binding metal ions. Oil-only products rely on antioxidants such as vitamin E and rosemary CO2 extract to slow rancidity.

Question 35

How do I choose a carrier oil?

Accepted Answer

By what you need it to do. For the face, the books use light, fast-absorbing oils; richer butters belong in body care. In the facial oil, squalane and marula come first as the lightest oils, followed by camellia, argan and jojoba. Jojoba resembles skin's own sebum and is non-comedogenic. Grape seed and camellia are light and fast-absorbing. Shea, cocoa and mango butters are rich enough that the book warns its body butter is too heavy, and possibly comedogenic, for the face. In soap, the choice is about how each oil changes the bar: coconut for hardness and lather, olive for mildness and conditioning, castor for stable lather, butters for creaminess.

Question 36

How much essential oil is safe in face products?

Accepted Answer

No more than 1% in total, or 0.3 g in a 30 g product. Avoid phototoxic citrus oils in daytime face care. The book names bergamot, orange and lemon as phototoxic. For comparison, it uses about 1–1.5% essential oil in bath salts and up to 2% fragrance to mask the smell of raw shea in body butter.

Question 37

Why is my body butter grainy?

Accepted Answer

Shea and cocoa butter formed large, unstable crystals as they cooled. Controlled cooling and longer whipping prevent it. The book's whipped-butter method: melt gently (never above 75 °C), cool to 25–30 °C and add liquid oils, vitamin E and essential oil. Refrigerate 20–50 minutes until an opaque film sets on top (set, not frozen), then whip 5–30 minutes, adding fragrance in the last minute. Let it set 12–24 hours. You can also 'seed' the cooling melt with a small piece of solid butter.

Question 38

How long do homemade skincare products last?

Accepted Answer

From the book: cleanser, creams and toner 9 months; peptide serum and eye gel 6 months; facial oil 9–12 months; cleansing oil and shower gel 12 months; butters, scrubs and bath salts 6 months unopened, 3 months opened.

These shelf lives assume the book's full protocol: sterilized tools and containers, the named preservative systems in water-based products, and antioxidants in oil-based ones. Airtight, suitable packaging matters too: airless pumps for gels, dark glass for oils.

Source: The Big Book of Homemade Skin Care — Use and storage notes in each formula · Open the article

Question 39

How do I handle lye safely?

Accepted Answer

Always add lye slowly to cold liquid, never the reverse. Wear full protective gear and never change a calculated lye amount. The book treats sodium hydroxide with extreme respect. Store it locked in a dry, cool place, double-contained in an HDPE bucket with hazard labels. The rule is sacred: lye to liquid. Add the granules slowly to cool liquid in a deep, resistant container while stirring. The solution heats up fast and releases fumes you must not inhale. Chilling or partly freezing the water reduces the heat spike. Weigh lye to 0.1 g, and never adjust it without recalculating the whole recipe.

Question 40

What is saponification?

Accepted Answer

It's the reaction between oils and lye that turns them into soap. As the book says: there is no soap without lye. Oils react with an alkali, sodium hydroxide for bars, and become soap. The chemical conversion happens within 24–48 hours. Curing then lets water evaporate, the pH stabilize and the bar harden. Each oil needs a specific amount of lye, set by its saponification (SAP) value. That's why the soap calculator's first job is working out exactly how much lye your oils need. Oils also react at different speeds: lauric-rich coconut saponifies fast, while oleic-rich olive oil is slow, which is why Castile traces and cures so slowly.

Question 41

What's the difference between cold process and hot process soap?

Accepted Answer

Cold process soap saponifies in the mold and needs a full cure. Hot process soap is cooked until saponification is nearly complete, so it only needs 1–2 weeks to harden. In cold process, lye solution and oils are combined at moderate temperatures (from room temperature to about 46 °C, depending on the recipe), blended to trace and poured. Saponification finishes in the mold, and you can encourage or prevent the gel phase. The bars need a full cure, usually at least 4–6 weeks and longer for soft-oil recipes. In hot process, the batter is brought to a light trace and cooked on low heat (a slow cooker on LOW, an oven or a double boiler at about 60–70 °C). It passes through a foamy stage, then a glossy, translucent gel, and ends as a waxy paste like mashed potatoes. That takes 45–60 minutes in the book's jasmine recipe. Superfat oils, delicate scents, milks and honey go in after the cook, once the lye is used up. The bars look rustic and textured, which suits layers and embeds but makes smooth tops and fine swirls harder.

Question 42

What is gel phase in soapmaking?

Accepted Answer

It's a self-heating stage where fresh soap reaches 54–82 °C and turns semi-translucent, which speeds saponification. The reaction is exothermic, so fresh soap heats itself. In gel phase it reaches 54–82 °C (130–180 °F), becomes semi-transparent and jelly-like, and saponification reaches about 80–90% within hours. Full gel gives brighter colors (micas, clays, spirulina, charcoal), a glossy, slightly translucent finish and a harder, longer-lasting bar, with a standard 4–6 week cure. No-gel soap needs about 6–8 weeks. To check afterwards, look at the soap 12–24 hours after molding: gelled soap is firm, warm and slightly translucent, ungelled soap softer and cooler.

Question 43

How long should soap cure, and why?

Accepted Answer

Most balanced cold process bars need 4–6 weeks; soft-oil bars need longer, and 100% olive Castile 6–12 months. Curing lets water evaporate, the pH settle and the bar harden. During the cure, water evaporates, the pH stabilizes and the soap crystallizes into a hard, mild, long-lasting bar. The book's cure times: High-coconut or utility bars: 2–3 weeks (a 100% coconut skin bar at 20% superfat, about 10 weeks). Balanced cold process bars: 4–6 weeks. Hot process: usable after the cook, with 1–2 weeks of hardening. Bars with 60–80% soft oils: 6–12 weeks. 100% olive Castile: 6–12 months. Salt bars: 4–8 weeks. No-gel, milk, high-butter or high-sugar bars: 8–10 weeks.

Question 44

What is superfat?

Accepted Answer

A deliberate excess of oil that the lye can't saponify. It stays in the bar as free oil, making it milder and ensuring no free lye remains. The standard safety superfat is 3–10%, and most recipes in the book use 5–7%. Coconut oil is the exception. Because it's so saturated and stable, it can carry a 20% superfat for a skin bar without going rancid, while 0–3% makes a household or laundry bar. Oils high in unsaturated fats, such as olive or sweet almond, would go rancid at 20%.

Question 45

What is trace?

Accepted Answer

Trace is the point where the emulsified soap batter thickens. The book works with three stages: just emulsified, thin trace and medium trace. Just emulsified is thin and fluid like cream, with no oil streaks; that's the moment to divide a batch for layers or colors. Thin trace is like thin pudding. Medium trace is like warm pudding or cake batter that holds a drizzle on the surface. Fragrance, post-trace oils and most additives go in at thin to medium trace. In butter-rich recipes, shea and mango can solidify when they meet cooler lye and fake a thick batter (false trace). That's why the Rosemary & Citrus bar is soaped at a warmer 43–46 °C.

Question 46

Why did my soap accelerate?

Accepted Answer

Certain ingredients and conditions speed up trace: some fragrance oils, citrus essential oils, sugars, milks, honey, juices, a water discount and high-coconut recipes. The book lists the usual accelerators. Fragrance oils that aren't tested for cold process (often those made for candles) can make the batter thicken suddenly. Citrus essential oils speed things up. Sugars, milks, honey and juices add heat. A water discount (less water) and high-coconut recipes trace fast by nature: 100% coconut soap can trace in 30–90 seconds. If the batter is thickening too fast to swirl or layer, the cause is almost always in that list.

Question 47

Why did my soap seize or turn lumpy (riced)?

Accepted Answer

Usually a fragrance oil that isn't safe for cold process. Mixing fragrance and essential oils can do it too. The book notes that US-made fragrance oils are usually tested for cold and hot process soap, while many others, often designed for candles, can cause seizing (instant thickening) or ricing (curd-like lumps and separation). Always check a fragrance's cold-process safety before using it.

Question 48

What's the difference between essential oils and fragrance oils?

Accepted Answer

Essential oils are natural volatile plant compounds; fragrance oils are lab-made blends with a stronger, more stable scent. Both work, but fragrance oils must be cold-process safe for soap. Essential oils suit cold and hot process soap once their stability at high pH is known. The safe range is 0.5–3% of batch weight, and the book's recipes use about 2%. Top and middle notes evaporate during saponification and curing, so the book recommends working near the upper safe limit and anchoring blends with base notes such as vetiver, patchouli, cedarwood or benzoin. Essential oil soaps smell milder. Fragrance oils give a stronger, longer-lasting scent, but their soap compatibility varies. Non-tested oils can seize or rice the batter. In candles, the book uses the same 10–12% load for either.

Question 49

Why did my soap develop a white coating?

Accepted Answer

That's soda ash: a harmless, powdery film of sodium carbonate formed by carbon dioxide in the air. Spray fresh soap with alcohol to prevent it. Soda ash doesn't affect how the soap performs; it's purely cosmetic. To prevent it, spray the freshly poured surface generously with 91–99% isopropyl alcohol.

Question 50

How do different oils affect the final soap?

Accepted Answer

Each oil's fatty acids shape the bar: coconut brings hardness and big lather, olive brings mildness and conditioning, castor stabilizes lather, and butters add hardness and creaminess. In the book's recipes, coconut oil (lauric and myristic acids) gives hardness, abundant bubbly lather and strong cleansing. It traces fast and can dry the skin at high levels unless superfatted. Olive oil (oleic acid) gives mildness, conditioning and a stable, creamy lather, but it traces slowly and needs a long cure. Castor oil (ricinoleic acid) stabilizes a dense, creamy lather at 2–5%; above 5–7% it makes the bar sticky and soft. Shea, mango and cocoa butters add hardness and creaminess. A typical balanced bar in the book is roughly 28–30% coconut, 15–25% butters, 44–47% olive and 2–5% castor.

Question 51

Can I use milk in soap?

Accepted Answer

Yes. Milk makes a very mild, creamy bar, but its sugars and proteins scorch easily, so it must be kept cold and soaped without gel. The book's method: freeze the milk in ice-cube trays first. Make the lye solution with chilled water only and let it cool to about room temperature. Add the frozen milk to the cooled lye and stir until melted, keeping it ideally below 30 °C. Combine with oils at 25–28 °C, blend in very short bursts to a light trace, pour into individual molds, don't insulate, and freeze for 3–5 hours or overnight. Cure 8–10 weeks. If milk soap turns orange-brown and smells burnt, the milk scorched or the soap gelled.

Question 52

What is a macerated oil?

Accepted Answer

An oil in which dried botanicals have been steeped so it takes up their fat-soluble compounds, like calendula-infused oil. Maceration means steeping thoroughly dried plant material in a stable carrier oil. Fresh herbs bring in water, which leads to rancidity and mold. Stable carriers include fractionated coconut, jojoba, high-oleic sunflower and refined olive oil. Avoid flax, hemp, walnut and evening primrose, which oxidize fast. In soap, a macerate can replace part of the oil base or be used as a post-trace superfat. The Rosemary & Citrus bar uses rosemary-infused olive oil, and the Fresh-Cut Rose bar uses rose macerate.

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