Magnesium PCA

Magnesium PCA is the magnesium salt of pyrrolidone carboxylic acid, a component related to the skin's natural moisturizing factors. Water-based products include it for moisture uptake, a better sensorial feel, and conditioning of hair or skin.
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Ingredient Snapshot

Overview
A moisture-binding mineral that leaves skin feeling bouncy and smooth.
Category
Hydration, Skin Conditioning
Type
Humectant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Attracts moisture to help skin feel bouncier and more comfortable, supporting a smoother look, and can reduce the sensation of dryness, especially in dehydrated areas.

Uses In Skincare & Cosmetics

Used in hydrating toners, essences, gel serums, and lightweight moisturizers, as well as leave-in hair treatments for added moisture care.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Typically well tolerated and non-sensitizing; irritation is uncommon. Suitable for daily use in leave-on products without known major regulatory limitations.

Is Magnesium PCA a Good Ingredient?

Its humectant action, tied to skin's natural moisturizing factors, provides dependable hydration with low irritation potential in water-based formulas, which supports a Good rating. Evidence backs moisture retention, though it's not strong for broader clinical effects.

Products with Magnesium PCA

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