What is Butylene Glycol?
Butylene Glycol falls into the humectant category — a humectant that draws water into the skin. A lightweight humectant and solvent rated 1/5, fungal-acne safe.
Where Butylene Glycol shows up
As a humectant that draws water into the skin, Butylene Glycol typically appears in serums, toners, and moisturisers of every kind. Separately from clogging, its irritancy is rated 0/5 — low, so it's unlikely to sting or sensitise on its own.
Is Butylene Glycol bad for acne-prone skin?
Because it barely registers on the comedogenic scale, Butylene Glycol is generally a safe pick for breakout-prone skin and is often recommended as a gentler alternative to heavier ingredients.