INCI: Butylene Glycol
A diol – solvent and humectant, milder than propylene glycol. Close in properties to butylene glycol. Pregnancy-safe.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
Functional diol humectant. Safety confirmed by CIR.
1,3-Butanediol is a four-carbon diol. The INCI name is usually Butylene Glycol. A clear liquid miscible with water. In cosmetics it works as a solvent, humectant and preservative booster (lowers water activity to help preservatives). Often part of toner, essence and lotion bases. Use levels run from 1 to 10%. Pregnancy safety. CIR confirms safety. Skin profile. Low irritation and allergen potential. Non-comedogenic. Suitable for all skin types.
Irritation potential
LowAllergen risk
LowPregnancy
SafeSuitable for
The Evigrade extension adds an evidence panel to Wildberries, Goldapple, Letu, iHerb, Sephora and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Butylene Glycol (1,3-Butanediol) is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
Butylene Glycol (1,3-Butanediol) suits: normal, dry, combination, oily, sensitive.
A diol – solvent and humectant, milder than propylene glycol.
On the Fulton scale 0/5 – non-comedogenic. For acne-prone skin, a rating of 3 or higher suggests choosing an alternative.
The INCI name is Butylene Glycol. It may also appear as: 3-Butanediol, 1,3-Butanediol, 1,3-Butylene Glycol.
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