Snapshot
- Overview
- A moisture-binding mineral that leaves skin feeling bouncy and smooth.
- Category
- Hydration, Skin Conditioning
- Type
- Humectant
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.
Like this ingredient?
Our take
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.
What it does
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.
Where you'll find it
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.
Before you use it
Safety
Typically well tolerated and non-sensitizing; irritation is uncommon. Suitable for daily use in leave-on products without known major regulatory limitations.
Products with Magnesium PCA
