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STRONTIUM SULFIDE

Description

Strontium sulfide is an inorganic compound with the chemical formula SrS, consisting of strontium and sulfur. In skincare formulations, it serves as a specialized ingredient primarily used for its depilatory properties. This white crystalline solid is water-soluble and reacts with moisture to produce hydrogen sulfide, which effectively weakens hair proteins.

When applied topically, strontium sulfide breaks down the disulfide bonds in hair keratin, causing the hair shaft to become brittle and easily removable. This mechanism makes it an effective component in hair removal creams and lotions. The ingredient's action is relatively quick, typically requiring only a few minutes of contact time to achieve noticeable results.

However, the use of strontium sulfide in cosmetic products requires careful formulation due to its potential for skin irritation. It is often combined with other ingredients to mitigate adverse effects and improve overall product efficacy. The concentration of strontium sulfide in depilatory formulations is typically regulated to ensure safety and minimize the risk of skin sensitization.

While effective for hair removal, strontium sulfide is not commonly found in other skincare applications due to its specific action and potential irritation concerns.