Zinc Phenolsulfonate

Zinc phenolsulfonate is an inorganic salt combining zinc with phenolsulfonic acid. It functions primarily as an antimicrobial and astringent agent in skincare formulations, helping to reduce excess oil and minimise the appearance of pores.This ingredient has a long history of use in topical skincare and is considered a traditional choice for managing oily and acne-prone skin, though it is less common in modern formulations than some alternatives.

Zinc phenolsulfonate works through its antimicrobial properties, which inhibit the growth of bacteria on the skin's surface. The astringent component causes a temporary tightening sensation, which can make pores appear smaller and help reduce the appearance of excess oil.The ingredient's mode of action is largely topical and superficial; it does not penetrate deeply into the skin but rather works on the outer layers to create a drying, oil-controlling effect.

Zinc phenolsulfonate is typically found in toners, astringents, and spot treatments. Use as directed on the product label, usually once or twice daily on clean skin. If using multiple astringent or drying products, introduce this ingredient gradually to assess tolerance. Avoid applying to already irritated or damaged skin.

Generally well-tolerated at typical cosmetic concentrations. May cause dryness or mild irritation in sensitive individuals; discontinue if persistent discomfort occurs. Not recommended for very dry or compromised skin barriers.