This book covers the bench side of making cosmetics in a salon: weighing, premixes, raw material storage, water, heat, cleaning, protective equipment, batch records, patch tests, contamination signs and the point at which a formula is ready for an outside laboratory. It does not choose ingredients, build emulsions or design a formula for a skin type; that work belongs to the formulation textbook, and every ingredient choice and target percentage in these pages is taken as given. Here the question is narrower and more practical: can you make the batch you wrote down, keep it clean, describe it honestly, and know when it is not ready to touch a client? The arithmetic is shown in full so that it can be checked at the bench, and the records are written so that the next maker can repeat the batch without asking a question.
Chapters
- Grams — Percent means grams per hundred grams
- Scale — Resolution decides what you can weigh
- Water — Use distilled or deionised water
- Clean, Disinfect, Sterilise — Three words that are not synonyms
- Protective Equipment — Goggles, gloves and the apron
- The Batch Record — What the record must carry
- The Patch Test — A screen, not a clearance
- Ready for an Outside Lab — The checks before a sample leaves
- Premix and Tiny Weights — When the addition is too small to weigh
- Raw Material Storage — Lids, lot numbers and first in, first out
- Contamination Signs — Swollen lid, yeast smell, mould spots
- Label and Sample Jar — The lab jar label
This is a Nandu Nai textbook. It is a private brand book, not a government licence, and it does not give the right to give medical treatment.