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Humectant

Propylene Glycol

One of the oldest and most proven moisturizers in cosmetics — propylene glycol moisturizes the skin, enhances the action of preservatives, and improves the penetration of active components. Despite controversies, it is recognized as safe in regulated concentrations.

moisturizerpenetratorpreservative boosterclassic
✓ Safe
Comedogenic Rating
0/5
Irritation Potential
0/5

What is it?

Propylene Glycol (1,2-propanediol) — synthetic glycol. One of the oldest cosmetic humectants (since the 1930s). Functions: moisturizer (hygroscopic), solvent (dissolves actives, fragrances), penetrator (increases the penetration of other components), preservative booster. In INCI: Propylene Glycol.

Multifunctional base component in creams, lotions, toners, and peels. Also popular as a solvent for AHA and BHA in peeling products.

Key Benefits

✦
Hydration and moisture retention
Highly hygroscopic — attracts water from the environment and retains it in the stratum corneum. Effective hydration even at low humidity.
◈
Enhancement of active penetration (penetration enhancer)
Temporarily disrupts the lipid packaging of the stratum corneum, allowing other actives to penetrate deeper — increases the effectiveness of AHA, BHA, and water-soluble vitamins.
✧
Antimicrobial and preservative booster
Has its own antimicrobial action and synergistically enhances the effectiveness of preservatives — allows for a reduction in their concentration in the formula.

Suitable for

for all skin typesfor normal and dry skin

Main Actions

✓ hydration✓ enhancement of active penetration✓ solvent✓ preservative booster
Controversies surrounding PG

Propylene Glycol — one of the most "discussed" ingredients. EWG rating 3/10. At concentrations >5%, it can irritate sensitive skin and cause contact dermatitis. In regulated concentrations (1-3% in creams) — safe and effective. Alternatives: propanediol (natural), butylene glycol.

CategoryHumectants
Found in these products
CeraVe Acne Foaming Cream Cleanser

Frequently Asked Questions

What does Propylene Glycol do for skin?
Multifunctional base component in creams, lotions, toners, and peels. Also popular as a solvent for AHA and BHA in peeling products.
Who should use Propylene Glycol?
Propylene Glycol is suitable for: for all skin types, for normal and dry skin.
Are there any warnings about Propylene Glycol?
Propylene Glycol — one of the most "discussed" ingredients. EWG rating 3/10. At concentrations >5%, it can irritate sensitive skin and cause contact dermatitis. In regulated concentrations (1-3% in creams) — safe and effective. Alternatives: propanediol (natural), butylene glycol

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