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PH in Cosmetics

Updated: Oct 4, 2023

The PH scale is from 0-14


0 being the most acidic and 14 being the most alkaline.


Ph is dependant on the concentration of Hydrogen (H+) or Hydronium Ions (H3O+)


Skin has a PH of around 5.5. Most personal care products fall in the range of 5.3 - 5.8 and rarely up to 7 (neutral) EXCEPTIONS do apply and we will get into some of them later on and also learn to make PH buffer solutions!


Rarely is a formula made and finished at just the right temperature, this leave us to adjust the PH accordingly.


PH on a logarithmic scale.


Anhydrous products have no PH.