Ingredient decoded

Butylene glycol

A supporting ingredient that dissolves other materials and helps control a formula's flow. A long chemical name can describe an ordinary formulation job rather than a headline skincare active.

Solvent

Chemical structure: 1,3-Butylene glycol — 1,3-Butylene glycol · C₄H₁₀O₂
Reference

First things first: what is it?

Butylene glycol is a glycol used in cosmetics as a solvent and viscosity-decreasing ingredient.

What does it do?

Formula support

It helps dissolve ingredients and adjust how easily a product flows.

Science or just a good story?

Cosmetics Info describes its formulation role and ingredient safety assessment. Those are different from evidence of a skin-treatment effect.

Spot it on the label

Look for Butylene Glycol in the ingredient list.

So, is it a useful ingredient?

A useful supporting ingredient to recognise; do not confuse it with an exfoliating acid.

Common product types

essence

toner

cleanser

serum

moisturiser

cleansing oil

sunscreen

Sources

Cosmetics Info: Butylene glycol and related glycolsChecked 2026-10-05

Butylene glycol

First things first: what is it?

What does it do?

Formula support

Science or just a good story?

Spot it on the label

So, is it a useful ingredient?

Common product types

essence

toner

cleanser

serum

moisturiser

cleansing oil

sunscreen

Related product profiles

Advanced Snail 96 Mucin Power Essence

Full Fit Propolis Synergy Toner

Low pH Good Morning Gel Cleanser

Glow Serum: Propolis + Niacinamide

Dynasty Cream

Calming Barrier Serum

Green Plum Refreshing Cleanser

Ginseng Cleansing Oil

Madagascar Centella Ampoule

Hyalu-Cica Water-Fit Sun Serum SPF50+ PA++++

Sources