Hi, as a formulator I develop products for others and therefore sell my formulas regularly. My excel sheets have the following:
-ingredients with links to the exact product used from supplier. **this is super important. Stating “dimethicone” isn’t enough. Link the exact dimethicone used.
-manufacturing SOP, with RPM speeds, mixing times, heat temperatures, cool down times, In process QC checks, etc. Be super precise as you want the excel sheet to be all the information they’ll ever need.
- final product parameters with viscosity (make/model of meter), final pH, fragrance, appearance, etc.
If with all this information they still have issues duplicating the formula- I provide them with hourly consultations to assist them. In my experience, my excel sheet is super detailed and is essentially fool-proof. If they can’t duplicate what I provide them its likely a skillset issue, which requires consultations. Often times they do not have the equipment and need to be creative.