Magnesium PCA

Explained

This ingredient is the magnesium salt of PCA (Pyrrolidone Carboxylic Acid). It is a great skin hydrator for the top layers of skin.

PCA is a natural humectant, meaning it draws water from the air to your outer layer of skin.

One study found magnesium ions improved skin hydration in the outer layer of skin, or the stratum corneum. However, it did not improve TEWL, or the transepidermal water loss. The TEWL is an indicator of how healthy your skin barrier function is. This study primarily looked at healthy skin with intact skin barrier.

See all 181 products with Magnesium PCA

What it does

Humectant A substance that promotes retention of moisture.
Skin Conditioning To hydrate and soften skin

Prevalence

Less common Percentage of products that contain it
0.2%
Top categories
Treatments
Moisturizers
Cleansers
Position Predominant list placement
Top 50%

References

CosIng Data

CosIng ID 35112
INCI Name MAGNESIUM PCA
EC #  227-392-8
All Functions Humectant, Skin Conditioning