Question

_______ salt is used as astringent in cosmetics.

• A. \( \text{Iron} \)
• B. \( \text{Lead} \)
• C. \( \text{Tin} \)
• D. \( \text{Zinc} \)

Hint:

Think of zinc oxide as a common ingredient in skin products, often with astringent and protective properties.

Answer 1

The Correct Option is D

Zinc salts, such as zinc sulfate and zinc oxide, are commonly used as astringents in cosmetics and personal care products. Astringents help to contract skin tissues, reduce pores, and decrease oiliness. Iron, lead, and tin salts are generally not used as astringents in cosmetics due to potential toxicity or other undesirable properties. Lead is particularly toxic and prohibited in cosmetics. Iron salts might be used in some specific applications but are not primary astringents. Tin compounds have limited cosmetic use as astringents.