19 free guides

Soapmaking guides, from first batch to first sale

Short, honest, and built on the same numbers as the calculators. Where are you starting from?

Making my first batch five guides in order · about 39 min Something went wrong Match what you see to its fix Selling my soap Labels, insurance and the rules · 3 guides

Start here

Your first batch, in five reads

About 39 minutes, in the order you’ll need them: safety before you open the lye, trace before you pour, cure before you use the bar. Finish one and it’s ticked off here, saved in this browser like your mold.

Troubleshooting

What does your soap look like?

Pick the one that matches. Each opens the guide that explains it: what caused it first, then whether it’s worth fixing and how.

White powder on top A dusty film that rubs off Soda ash: causes and fixes

Orange freckles Spots that turn up weeks or months later Dreaded orange spots (DOS)

Holes or glassy veins Air bubbles, or crackled glycerin rivers Air bubbles and glycerin rivers

A dark circle in the middle Translucent center, pale rim: partial gel Gel phase: force it or prevent it

Still soft days later Won’t unmold, or dents under a thumb Soap too soft or won’t harden

Batter set in the pot Thickened, riced or seized before you poured Acceleration, ricing and seizing

Zaps, stings or crumbles Is it lye-heavy? How to test safely How to test for lye-heavy soap

Hard white specks inside Stearic spots from false trace Trace: light, medium, thick

Every guide

All 19 guides

Each one names its sources and, where there’s arithmetic, does it with the same engine as the calculators.

Basics

Lye safety, start to finish

Gloves, goggles, ventilation, and what to do if it splashes. The page to read before your first batch.

7 min read Pairs with Lye Calculator

Basics

Saponification explained

What the lye is doing to the oil, why every oil needs a different amount, and where SAP values come from.

5 min read Pairs with Lye Calculator

Basics

Superfat explained: what % and why

Why 5% is the default, when 8% or 20% is right, and what superfat does to lather and shelf life.

5 min read Pairs with Superfat Adjuster

Basics

Water discounting and lye concentration

The three ways soapers describe water, why “38% of oils” misleads, and what concentration to pick.

5 min read Pairs with Lye Concentration Converter

Basics

Trace: light, medium, thick

What each stage looks like, which one each technique needs, and how much working time your recipe gives you.

8 min read

Basics

Gel phase: force it or prevent it

What gel does to color and unmold time, why your mold decides whether it happens, and how to commit either way.

6 min read Pairs with Mold Volume

Basics

Oil properties chart

Hardness, cleansing, conditioning, bubbly and creamy for every oil in the calculator, in one sortable, filterable, printable table.

3 min read Pairs with Lye Calculator

Basics

Your first cold process batch, step by step

The classic beginner recipe, walked through with the calculator open and sized to your mold and your scale.

13 min read Pairs with Lye Calculator

Basics

Cold process vs melt and pour vs hot process

What each method asks of you, what it gives back, and what a bar costs by each route.

5 min read Pairs with Soap Cost & Pricing

Basics

How long soap needs to cure (and why)

Water loss, hardness and lather over four to six weeks, and the bars that need longer.

5 min read

Troubleshooting

Soda ash: causes and fixes

The white film, why it isn’t the lye-heavy soap you fear, and the three mechanisms behind the prevention tips.

6 min read Pairs with Lye Concentration Converter

Troubleshooting

Dreaded orange spots (DOS)

Why iodine value is the wrong number, which oils invite rancidity, and how superfat and metals play in.

5 min read Pairs with Superfat Adjuster

Troubleshooting

Acceleration, ricing and seizing

Four different failures that look alike in the pot, why no label can warn you, and a test that costs two grams.

4 min read Pairs with Fragrance Load (Soap)

Troubleshooting

Soap too soft or won’t harden

Recipe, water, cure or superfat? One measurement tells you which, and how the “40% hard oils” rule compares with it.

6 min read Pairs with Superfat Adjuster

Troubleshooting

How to test for lye-heavy soap

Why pH strips can’t answer the question, how to zap-test safely, and how much free lye a bad batch holds.

8 min read Pairs with Superfat Adjuster

Troubleshooting

Air bubbles and glycerin rivers

One is your stick blender, the other your mold and your water. Titanium dioxide is where rivers show.

4 min read Pairs with Lye Concentration Converter

Selling

Soap labeling rules: United States

When soap is “soap” to the FDA and when it’s a cosmetic, what each label must say, and where MoCRA applies.

8 min read Pairs with Bar Count & Cut

Selling

Soap and cosmetic labeling: UK and EU

There’s no soap exemption here: safety assessments, a Responsible Person, SCPN/CPNP notification, and an allergen list that more than triples for products placed on the market from July 2026.

6 min read Pairs with Fragrance Load (Soap)

Selling

Insurance and legal basics for craft sellers

What product liability costs per bar, what the policies cover, and why an LLC isn’t a substitute. Sourced, and not legal advice.

6 min read Pairs with Soap Cost & Pricing

The guides explain it. The calculators do the arithmetic.

Every number a guide talks about (lye, water, superfat, cost per bar) is one click away, sized to your own mold.

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