At a glance
- CAS number
- 56-81-5
- INCI name
- Glycerin
- Function
- humectant, solvent, emollient, viscosity modifier
- Typical use level
- 1%–30%
- Solubility
- water
- Stable pH
- 3–11
CAS number and synonyms are sourced from PubChem. Function, usage levels, pH and compatibility are AI-assisted formulation guidance — verify against your supplier's technical data sheet and applicable regulations before use.
Also known as
glycerol glycerin Glycerine 1,2,3-Propanetriol Glycyl alcohol Trihydroxypropane Glyceritol Osmoglyn 1,2,3-trihydroxypropane Glyrol Glysanin Grocolene
Compatibility
Works well with:
Hyaluronic Acid Niacinamide Panthenol Aloe Vera Urea Allantoin Lactic Acid Sodium PCA Betaine Carbomer
Use caution with:
Strong Oxidizing Agents Chromium Trioxide Potassium Permanganate
Glycerin is broadly compatible with most cosmetic ingredients across a wide pH range. At very high concentrations (above ~50%), it can have a dehydrating effect on skin by drawing moisture from deeper layers rather than the environment. Strong oxidizing agents can react with glycerin exothermically and should be avoided in formulation.
Formulation notes
At concentrations above 30% in leave-on products, glycerin may feel tacky and can paradoxically cause dryness in low-humidity environments. Commonly used at 3–10% in most rinse-off and leave-on formulations. Considered safe as used per CIR and EU Cosmetics Regulation with no restricted maximum level for cosmetic use.
Related ingredients
- Butylene GlycolHumectant
- Pentylene GlycolHumectant
- Propylene GlycolHumectant
- Arachidyl AlcoholEmollient
- Behenyl AlcoholEmollient
- Caprylic/Capric TriglycerideEmollient