What it is
Aminomethyl propanol is a small amino alcohol used to adjust and stabilize the pH of cosmetic formulations. It is commonly employed to neutralize acidic gelling and thickening agents such as carbomers, helping them swell and build viscosity. In sunscreens it is used at low levels as a functional pH and texture aid rather than for any skin-active benefit.
Safety & warnings
At the low use levels and neutralized pH typical of finished cosmetics, aminomethyl propanol is generally well tolerated; like other alkaline raw materials it is handled with care during manufacturing. It is not a recognized fragrance allergen and is not associated with comedogenicity.
Origin & sourcing
Synthetic, manufactured as an amino alcohol for use as a cosmetic pH adjuster and neutralizer.
Questions everyone asks
Why is aminomethyl propanol added to a formula?
It is used to adjust and stabilize pH and to neutralize acidic thickeners such as carbomers so they build viscosity.
Does aminomethyl propanol benefit the skin directly?
No, it serves a functional role in pH balancing and texture rather than providing a direct skin-active benefit.