Cosmetics Formulation Development

If the pH is high, you can use HEPES (hydroxyethyl piperazineethanesulfonic acid) you get the pH?

Hello, is it available? by gradually adding it to the formula and วัดค่า pH But in this case, the team recommends using acid directly to adjust pH as it is used at a lower rate. HEPES An optional acid sample is Lactic Acid , glycolic acid , Citric Acid