Formulation guides

Guide · Safety

Lye Safety: The Non-Negotiable Checklist

PPE, ventilation, mixing order, and storage for sodium and potassium hydroxide — the working rules before any batch of soap.

Guide · Formulation

Reading an Oil: Hardness, Lather, and Conditioning in the Finished Bar

How coconut, olive, tallow, palm, castor, and the common butters shift hardness, bubbles, and skin feel — with usable percentage ranges.

Guide · Process

Cold Process vs Hot Process: Control, Cure Time, and Texture

What you gain and lose choosing cold process or hot process — trace control, cook time, cure length, and the bar you get at the end.

Guide · Formulation

Superfatting and Lye Discount: What the Percentage Does to the Bar

What a 5% versus 8% superfat actually changes — leftover oil, mildness, shelf life — and how a lye discount is calculated.

Guide · Process

Soap Cure Time: Why 4 to 6 Weeks Is Not Optional

What happens during a 4–6 week cure — water loss, hardness, and pH — and how to rack bars so they actually dry.

Guide · Anhydrous

Balm Formulation Basics: Wax-to-Butter-to-Oil Ratios

Starting ratios for jar balms and stick balms, and how beeswax vs candelilla or berry wax changes the set.

Guide · Formulation

Dual Lye Soap Recipe: NaOH and KOH Blends

Dual lye soap recipe basics: why blend NaOH and KOH, where a 95/5 split earns its keep, and how the SAP math divides.

Guide · Formulation

SAP Value Chart for Soap Making: What SAP Value Means

What a SAP value is, why a soap making SAP chart is only a start, and a worked NaOH example you can check by hand.

Guide · Anhydrous

Why Is My Lip Balm Grainy

Why lip balm goes grainy, the fast-cool fix, and the melt-and-reset rescue for a grainy salve. Ratio first.

Guide · Formulation

Water Discount in Cold Process Soap

Water discount in cold process soap — how lye concentration changes trace speed, hardness, and cure time.

Guide · Formulation

How to Formulate a Soap Recipe

How to formulate a soap recipe: balance hardness, cleansing, bubbly lather, and conditioning in a short blend.

Guide · Technique

Soap Trace Stages: Light, Medium, and Heavy

Soap trace stages: what light, medium, and heavy trace look like, and which technique each stage is for.

Guide · Technique

Goat Milk Soap, Cold Process

Goat milk soap, cold process: frozen milk, low heat, no insulation, and what the milk adds to the bar.

Guide · Technique

How to Rebatch Soap

How to rebatch soap: grate, melt with a little liquid, and what a rebatch fixes — and what it cannot.

Guide · Formulation

Fragrance Oil Usage Rate in Cold Process Soap

Fragrance oil usage rate in soap is a safety cap, not a strength preference — and it is not a candle rate.