Zinc Chloride

Zinc chloride is an inorganic salt composed of zinc and chlorine. It exists as a white crystalline powder and is soluble in water, making it suitable for incorporation into aqueous skincare and oral care products. The ingredient has a long history of use in clinical and pharmaceutical applications.In skincare, zinc chloride is primarily used for its soothing and astringent properties. It appears in a small proportion of skincare products (approximately 0.2%), most commonly in formulations designed to calm irritated skin or support oral hygiene.

Zinc chloride functions as an astringent, meaning it causes mild contraction of skin tissue. This action can help reduce the appearance of pores and may provide a tightening sensation on the skin surface. The ingredient also possesses mild antimicrobial properties, which may contribute to its use in oral care formulations.When applied topically in dilute solutions, zinc chloride interacts with the outermost layers of skin, producing these astringent effects without penetrating deeply into the dermis.

Zinc chloride is typically found in rinse-off formulations such as toners, astringent solutions, or oral care products rather than leave-on treatments. If using a product containing this ingredient, follow the manufacturer's instructions regarding frequency and duration. For oral care products, use as directed on the packaging. For skincare, patch testing is advisable if you have sensitive skin, particularly if the product is intended to be used frequently.

Zinc chloride is generally well-tolerated in cosmetic concentrations. As with any astringent ingredient, overuse may cause dryness or irritation in sensitive individuals. Avoid contact with eyes.