What it is
Zinc Chloride is a water-soluble inorganic salt of zinc and chlorine used in cosmetics at low concentrations. In topical formulas it functions chiefly as an astringent and as a source of zinc ions, and it may contribute to the overall conditioning of the formula. It is distinct from zinc oxide, the insoluble mineral UV filter, and does not itself provide sun protection.
Safety & warnings
At the low levels used in finished cosmetics Zinc Chloride is generally tolerated; concentrated solutions of the raw material are irritating, but this is not relevant to the trace amounts used in formulated products.
Origin & sourcing
Synthetic inorganic salt, typically produced by reacting zinc or zinc compounds with hydrochloric acid.
Questions everyone asks
Is Zinc Chloride the same as zinc oxide?
No. Zinc Chloride is a water-soluble salt used as an astringent and zinc source, while zinc oxide is an insoluble mineral that acts as a UV filter.
Does Zinc Chloride provide sun protection?
No. It is used as a minor astringent and conditioning ingredient and does not filter ultraviolet light.