Why keep a batch log?
A batch code on each label links a product back to the day it was made, the recipe and the ingredient lots. That's how you trace a problem, such as a fragrance that discoloured or a customer reaction, and it's expected, often required, if you sell cosmetics. The ready date stops you selling or using soap before it has cured.
- Cure time: cold-process bars are commonly cured 4–6 weeks, hot-process bars at least 1–2 weeks. Many candle makers let candles cure 3–14 days before burning.
- Ingredient order: label rules in the EU, UK and US usually list ingredients in descending order of weight. Soap made with lye may be labelled as the saponified oils, depending on the regulation that applies. Check the rules for your market.
- Linking recipes: recipes you saved in the soap lye calculator appear in the recipe list, and choosing one fills the ingredient field automatically.
Questions
- What format is the batch code?
- PREFIX-YYYYMMDD-NN, e.g. SOAP-20261017-01. The number increases for each batch made on the same day with the same prefix.
- Is this a legal labelling tool?
- No. It helps you keep records; check the cosmetic or product rules that apply where you sell.
- Is my log private?
- Yes. It is saved in this browser only. Export a CSV for backups.