Soap Batch & Cure Log

A batch you wrote down is a product you can repeat

Everything on the selling side of soap hangs off one habit: writing down every batch. A batch record answers what you made, when, from what, and at what fragrance rate — and it's the anchor a finished bar traces back to. Code the batch before you pour (something simple like CP-0419-01 for the first cold-process batch on 19 April), put that code on the curing tray and later on every bar, and a consistent, traceable product comes from a consistent, written-down process.

The payoff comes weeks later. When a bar develops an off smell, a soft spot, or a customer reports a reaction, the batch record is where the answer lives: the oils, the supplier lots, the fragrance and its rate, and the conditions. Memory blurs across a dozen batches; a written row doesn't.

Sell nothing before it's cured

Cold-process soap is finished when it cures, not when it sets. Over a typical four to six weeks — longer for high-water or soft recipes — the bar hardens, grows milder, and loses the water you added so it lasts and lathers, and only then is it at the net weight you print on the label. The cure-rack log keeps that honest: write the date made and the cure days, work out the cure-ready date, and don't sell or wrap the batch until then.

Two quick checks finish the job. Zap-test a cured bar — a sharp, battery-like zap means free lye is still present, so rebatch or discard it (curing longer won't fix a lye-heavy batch). And weigh a cured bar against its label weight; a bar that has dropped below its printed net weight makes the whole batch short-weight. Anything with water — a lotion or emulsified scrub — is a different situation entirely: it generally needs a proper preservative system, not just a cure, and the requirements vary by country and product type — confirm with a cosmetic chemist and your regulator.

A record-keeping book, not a lye calculator or legal advice

This is a record-keeping tool, not a substitute for a lye calculator, a cosmetic chemist, or the law. It helps you record what you made and when it's ready; it does not formulate or certify. Always run your own recipe through a lye calculator, follow every material's Safety Data Sheet and usage rate, and confirm the labeling, claims, and preservation rules for your country with your national regulator (in the US, the FDA's cosmetics guidance), a cosmetic chemist, and your insurer. Cure times and fragrance rates are typical starting points; the label weight is always the real, post-cure weight on your scale.

Is this really free?

Yes — the starter is a free PDF download with no email required. It is the lite cut of the paid Soap & B&B Maker's Batch & Recall-Readiness Record Book, which adds a recall-readiness lot log, an oils/lye/materials inventory by supplier lot, a packaging inventory, a fragrance-load calculator that checks your fragrance rate against the supplier's stated maximum usage rate, a cost-per-bar calculator, and PDF references on the product types and labeling.

What does the paid Soap & B&B Record Book add?

The free starter is two printable pages — a batch record and a cure-rack log — plus a cure-time quick reference. The paid record book is a working Excel workbook (8 tabs) with the things a flat PDF can't do: a batch record that computes the cure-ready date, a recall-readiness lot log that traces every bar to a batch and a supplier lot, an oils/lye/materials inventory by supplier lot and a packaging inventory with low-stock flags, a fragrance-load calculator that checks your fragrance rate against the supplier's stated maximum usage rate, and a cost-per-bar calculator — plus five PDF guides (product types & cure, labeling/claims/GMP, costing & pricing, the Start Here guide, and printable records).

What exactly is in the free starter?

A print-and-use batch record, a cure-rack log, a product cure-time quick reference (cold-process to body butter, with typical cut/cure times and fragrance loads), and the bars-from-a-batch math for planning your jars and labels.

Is this a recipe book or a lye calculator?

No. It is a record-keeping tool. It does not formulate recipes or calculate lye — always run your own recipe through a lye calculator for the exact lye and water, follow every material's usage rate, and confirm your labeling and claims with your regulator and a cosmetic chemist.

Does it expire or is it tied to a year?

It never expires. It is evergreen — product types, cure times, and the batch math don't change, and the logs use a date column you fill in yourself.