What is "PROPANEDIOL" and what does it do?

Role: HUMECTANT/SOLVENT

Family: GLYCOL

Comedogenic index: 0

Propanediol can be derived naturally from corn or created synthetically. It is a colorless to pale yellow, viscous (somewhat sticky) liquid and is chemically similar to 1,2-propanediol (propylene glycol).
Propanediol (also known as 1,3-propanediol) is a glycol that can increase the absorption of ingredients (such as salicylic acid) to improve their effectiveness. In addition, it offers moisturizing properties that can give skin a smooth, luminous appearance when the formula is applied. Propanediol is considered a safe and well-tolerated ingredient, unlikely to cause sensitivities.

It's a real Swiss army knife: it can be used to improve skin hydration, as a solvent, to enhance the efficacy of preservatives or to influence the sensorial properties of the final formula.

Considered a safe and well-tolerated ingredient, it is unlikely to cause sensitivities. In June 2018, the Cosmetic Ingredient Review Board re-evaluated its use, confirming its safety. In products to be left on the skin, it has been used up to a concentration of 39.9% (in a deodorant), although skin care products generally contain lower amounts.

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