1. What is your opinion of the staff if you reduce
perfect c ?
perfect c down from 5% to 3% by how much whiteness change? or
Sodium Metabisulfite no difference
Sodium Metabisulfite To reduce the chance of changing color, right? If not serious about the color change But not wearing it doesn't mean that the extract will deteriorate quickly, right? 2.1 The color change.
SymWhite that mean the deterioration of the extract? Or just change the color only 3. Using
Phenoxyethanol 1% have Chances of irritation But it does not adversely affect the formula or reduce the quality of the extract, right? Thank you.