Quick answer

Often used as a solvent and to enhance the absorption of other ingredients into skin; Characteristically hydrating; may leave a dewy finish on skin; Can be used to support a preservative blend; Also goes by the technical name 2-methyl-1,3-propanediol; As a raw material it is clear, colorless liquid Key benefits: Hydration.

Methylpropanediol

Updated

2-Methyl-1,3-propanediol

Purpose

Solvent that can be used to enhance the absorption of other ingredients into skin for improved efficacy. Also provides hydrating properties.

Rating

GOOD

Category

Solvent, Humectant

INCI Purpose

SOLVENT

Benefits

Hydration — Attracts and locks in moisture to keep skin plump and dewy

Alternative Names

Hair Profile

Functions

Humectant

At a Glance

Often used as a solvent and to enhance the absorption of other ingredients into skin

Characteristically hydrating; may leave a dewy finish on skin

Can be used to support a preservative blend

Also goes by the technical name 2-methyl-1,3-propanediol

As a raw material it is clear, colorless liquid

Article

Methylpropanediol is a synthetic ingredient that functions as solvent for difficult to dissolve materials, including certain powders and preservatives. In a skin care formula, it can enhance the absorption of ingredients such as salicylic acid for better penetration and efficacy.

Methylpropanediol also has pronounced hydrating properties that can leave a smooth, dewy finish on skin. It is sometimes used as part of preservative blend where it helps boost the effectiveness of preservatives, so a lower amount of them is necessary.

In fragrance formulations, methylpropanediol can prolong scent intensity on the skin.

As a raw material it is clear, colorless liquid.

During their evaluation in June 2018, the panel of experts for the Cosmetic Ingredient Review council recognized methylpropanediol as a safe ingredient as traditionally used in cosmetic in products.

See: Propanediol

References

PubChem, Accessed April 2021, ePublication Cosmetic Ingredient Review, June 2018, pages 1-73 Contact Dermatitis, September 2017, pages 159-162