Methylpropanediol
INCI · Methylpropanediol · also MPdiol
Overview
A light glycol used mostly as a solvent and texture-thinner, and partly as a humectant. It dissolves actives such as salicylic acid and is described by suppliers as helping them spread and absorb, which is why serums often feel fast-sinking.
Who it's for
Watery serums and toners where a weightless finish matters.
Cautions
It carries other ingredients along with it, so an already-irritating formula can feel sharper; it is a support ingredient, not an active.
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- Max safe
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What does Methylpropanediol do in skincare?
A light glycol used mostly as a solvent and texture-thinner, and partly as a humectant. It dissolves actives such as salicylic acid and is described by suppliers as helping them spread and absorb, which is why serums often feel fast-sinking.
Is Methylpropanediol considered safe for skin?
It carries other ingredients along with it, so an already-irritating formula can feel sharper; it is a support ingredient, not an active.