Butylene Gycol

BUT

9/10

Concern level

High concern

Butylene Glycol (usually 1,3-butanediol) is a multifunctional cosmetic diol used primarily as a humectant, solvent, viscosity-reducing agent, and skin-conditioning ingredient. It helps dissolve actives and improves spreadability and texture in water-based formulas. It also supports moisturization by binding water and can enhance product penetration and sensory feel. ([pubchem.ncbi.nlm.nih.gov](https://pubchem.ncbi.nlm.nih.gov/compound/Butylene-Glycol?utm_source=openai))

Pore-clogging

Non-comedogenic

Pregnancy

Safe

Regulatory

No data

Benefits

MoisturizingImproves TextureSupports Barrier Function

Chemical Properties

Molecular Weight

90.12 g/mol

pH Range

4.00 - 8.00

Typical Concentration

1.00% - 10.00%

CAS Number: 107-88-0

Skin Type Compatibility

dry skin8/10

oily skin7/10

sensitive skin6/10

acne prone8/10

mature skin7/10

normal skin9/10

Interactions

incompatible with: No major incompatibilities are typically reported for cosmetic use., In very sensitive skin, it may feel more irritating when combined with strong acids, retinoids, or high-alcohol formulas.

Risks & Warnings

Generally low risk in cosmetics, but it can occasionally cause stinging or irritation in very sensitive or compromised skin. Rare contact sensitivity has been reported anecdotally; irritation is more likely at higher concentrations or in formulas with multiple actives. ([cir-safety.org](https://www.cir-safety.org/ingredient/butylene-glycol?utm_source=openai))

Vegan Cruelty-Free

Found In Products

Dr. Jart+