Butyl-ene Glycol
Butyl-ene Glycol
BUT
9/10
Concern level
High concern
Butylene Glycol is a small glycol used in cosmetics as a humectant, solvent, viscosity-decreasing agent, and skin-conditioning helper. It improves spreadability, supports hydration, and helps dissolve or carry other ingredients in serum, lotion, and makeup formulas.
Pore-clogging
Non-comedogenic
Pregnancy
Safe
Regulatory
No data
Benefits
MoisturizingSupports Barrier Function
Chemical Properties
Molecular Weight
90.12 g/mol pH Range
3.00 - 10.00Typical Concentration
1.00% - 10.00%CAS Number: 107-88-0
Skin Type Compatibility
dry skin9/10
oily skin7/10
sensitive skin6/10
acne prone8/10
mature skin8/10
normal skin9/10
Interactions
incompatible with: very high levels of strong acids or alkalis may increase sting or reduce comfort, formulas with multiple glycols or solvents may feel more irritating on reactive skin
Risks & Warnings
Usually well tolerated, but some people may experience mild stinging or irritation, especially with compromised skin barrier or higher-use leave-on products. As with many glycols, occasional sensitivity is possible.
Vegan Cruelty-Free
