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want to make serum c+ Ferulic Suggest a solution Ferulic is also missing in the formula Ethoxydiglycol (EDG) and ethanol and none alkali

Vitamin C (L-ascorbic acid) (Standard)Can I eat it?

prepare the water part Use heat to dissolve the oil binder, add Vit E, wait for it to cool, then pour it into the water. You will see that it is opaque. Another question, I want the formula to get the ph as you want, but the FDA doesn't use TEA more than 2.5%. Which substance can I use to adjust the...

Base Component Ratio Purified Water 44.80% Ethoxydiglycol (solvent) 20.00% Propylene Glycol (smooth surface) 10.00% Glycerin (Skin slippery) 3.00% Laureth-23 ( brazing water, oil) 3.00% Triethanolamine (adjusted pH) 1.00% d-Alpha Tocopherol (Natural Vitamin E ) 1.00% Phenoxyethanol ( สารกันเสีย ) 1....