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Ask about dissolving PPD,RL in hair dye formula. More information The amount of substance used is %W/W whereas the colorant GuarCat 10% Poly-Conditioner Eco 2% ColorFix 5% Butylene Glycol 5% ascorbic acid 0.5% Phenoxyethanol 1% PPD 0.27% RL 0.275% Add water to 100% Developer Disodium EDTA 0.1% GuarC...

Hello, I would like to ask about the standard hair dye formula which can be applied with natural extracts with water soluble properties. and want to have as little irritation as possible and with minimal chemicals What substances should there be? (Advise for both adjusting the gel formulation formul...