Other

Zinc PCA

The zinc and natural amino acid PCA compound — zinc PCA regulates sebum production, suppresses acne bacteria, and reduces enlarged pores without drying out the skin. An ideal active for oily and combination skin.

Sebum regulationAcnePoresOily skin

✓ Safe

Comedogenic Rating

0/5

Irritation Potential

0/5

What is it?

Zinc PCA (zinc pyrrolidone carboxylate) — a salt formed from the combination of zinc ions (Zn²⁺) and pyrrolidone carboxylic acid (PCA). PCA — a natural amino acid, a component of the skin's natural moisturizing factor (NMF). Zinc ions — a regulator of 5α-reductase activity (an enzyme that controls the synthesis of dihydrotestosterone → a stimulator of sebaceous glands), an antibacterial agent against C. acnes, and a regulator of keratin production. The PCA part adds moisturizing properties, softening the potential drying effect of zinc. Result: reduced sebum production without drying, which distinguishes zinc PCA from more aggressive sebum regulators.

Toners, serums, and moisturizers for oily and combination skin. The concentration is usually 0.1–2%. Well combined with niacinamide (synergy in sebum regulation), salicylic acid, and BHA. Suitable for daily use in the morning and evening.

Key Benefits

✦

Sebum regulation without drying

Zinc PCA inhibits 5α-reductase — an enzyme that converts testosterone into dihydrotestosterone (DHT), which stimulates sebaceous glands. Clinical studies: 2% zinc PCA reduces sebum production by ~10–15% over 8 weeks. Unlike clay masks or coarse absorbents, it reduces sebum production without disrupting the hydrolipid balance — the PCA part maintains moisture.

◈

Antibacterial action against C. acnes

Zn²⁺ ions destabilize the cell membrane of C. acnes and disrupt its metabolism, reducing follicle colonization. A less aggressive approach compared to benzoyl peroxide, but works well with it. Synergism with salicylic acid: SA opens pores, zinc PCA controls the bacterial environment and sebum in the pores.

Suitable for

Oily skinCombination skinAcne-prone skinSkin with enlarged pores

Main Actions

✓ Sebum regulation✓ Antibacterial action

Zinc PCA vs zinc in general

Zinc in cosmetics appears in several forms: zinc oxide (SPF + antibacterial), zinc PCA (sebum regulation + antibacterial), zinc gluconate, zinc sulfate. Zinc PCA is considered the best form for sebum regulation due to the PCA carrier, which simultaneously moisturizes and facilitates the penetration of zinc ions. Zinc oxide — primarily SPF. Zinc gluconate — a milder anti-acne option in oral supplements.

From our blog

Best Skincare Ingredients for Oily Skin (And What to Avoid)

Check if this ingredient works for your skin — analyze your full product formula for free.

Analyze your product