Zinc PCA

INCI: Zinc PCA (Zinc Pyrrolidone Carboxylic Acid)
Category: Sebum-regulating agent, antimicrobial
Used in: Skincare, haircare — serums, moisturisers, acne treatments, scalp products
Typical Usage Level (Topical):
0.1% – 1% in leave-on formulations

What This Ingredient Does

Zinc PCA combines zinc with PCA, a natural moisturizing factor component, to help regulate oil production while maintaining hydration balance.

On the skin, it helps reduce excess sebum, control acne-causing bacteria, and calm inflammation associated with breakouts. This makes it useful for oily and acne-prone skin without causing excessive dryness.

On the scalp, Zinc PCA helps control excess oil and supports dandruff management by reducing sebum buildup and maintaining a healthier scalp environment.

It is commonly used alongside ingredients like niacinamide and salicylic acid in formulations targeting oil control, acne, and scalp concerns.

Key Benefits

• Helps regulate excess oil production on skin and scalp

• Supports acne-prone skin

• Helps reduce dandruff and scalp oiliness

• Provides mild antibacterial action

• Maintains hydration balance without over-drying

Who It’s Best For

• Oily or acne-prone skin

• Individuals with excess sebum production

• Skin prone to clogged pores and breakouts

• Oily scalp or dandruff concerns

• Combination skin needing balanced oil control

Clinical Note by Dr. Su

M.D. Dermatologist

Zinc PCA is effective for managing excess oil in both skin and scalp. It supports acne-prone skin and can also help control scalp oil and dandruff when used consistently in well-formulated products.

References

1. Dreno B, et al.
   The role of zinc salts in the treatment of acne: a review
   Dermatology Research and Practice, 2011
   https://pubmed.ncbi.nlm.nih.gov/21834944/