Aminoethyl Propanediol
AKA “3-PROPANEDIOL, 3-Propanediol, 2-Amino-2-ethylpropanediol, NSC 8803, EINECS 204-101-2, AEPD-85, UNII-0ADF1987D4, 3-dihydroxy-2-ethylpropane”
Synthetic
Ingredient Facts
Aminoethyl propanediol
AKA: 3-PROPANEDIOL, 3-Propanediol, 2-Amino-2-ethylpropanediol, NSC 8803, EINECS 204-101-2, AEPD-85, UNII-0ADF1987D4, 3-dihydroxy-2-ethylpropane
Synthetic · Humectant · EWG: 1
Synthetic
Humectant
Skin Conditioner
Synthetic
Clean
Helps balance the pH of formulas to keep them stable and gentle on skin.
Formula
C5H13NO2
Mol. Weight
119.16
CAS #
115-70-8
Form
Liquid
State
Liquid
See origin →
Functions
Buffering
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Stabilizes pH
Antioxidant Protection
Reduces Inflammation
Wound Healing
Traditional Use
Synthetic pH buffer and humectant developed in the 20th century for use in cosmetics. Created to neutralize acids in formulations and improve skin hydration.
Skin Types
●all-skin-types, gentle
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Safety Assessment of Tromethamine, Aminomethyl Propanediol, and Aminoethyl Propanediol as Used in Cosmetics.
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2018
Safety Assessment of Tromethamine, Aminomethyl Propanediol, and Aminoethyl Propanediol as Used in Cosmetics.
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2018
Safety Assessment of Tromethamine, Aminomethyl Propanediol and Aminoethyl Propanediol as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Aminoethyl Propanediol
European Commission
EU Cosmetic Ingredient Database (CosIng)
Aminoethyl Propanediol
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Progress in 1,3-propanediol biosynthesis.
Li B, Gao W, Pan Y, Yao Y, Liu G
Frontiers in bioengineering and biotechnology, 2024
Effects of 1,3-propanediol associated, or not, with butylene glycol and/or glycerol on skin hydration and skin barrier function.
Pinto JR, Monteiro E Silva SA, Leonardi GR
International journal of cosmetic science, 2024
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR