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Lye

Description

Lye, also known as sodium hydroxide, is a potent alkaline substance widely used in various skincare formulations and cosmetic manufacturing processes. This highly caustic compound plays a crucial role in saponification, the chemical reaction that produces soap by combining fats or oils with an alkali. In its pure form, lye is extremely corrosive and can cause severe skin burns, making proper handling and dilution essential.

In skincare, lye is primarily utilized in small, controlled amounts to adjust the pH of products or as a key component in certain peeling treatments. Its ability to break down proteins makes it effective in exfoliating and removing dead skin cells, promoting skin renewal. However, its use requires precise formulation to ensure safety and efficacy.

Beyond soap-making, lye contributes to the production of various cleansers, shampoos, and hair relaxers. Its alkaline properties help to open hair cuticles, facilitating the straightening process in hair treatments. Despite its benefits when properly formulated, the use of lye in skincare products has decreased in favor of gentler alternatives. Manufacturers must adhere to strict safety guidelines and concentration limits when incorporating lye into cosmetic formulations to prevent skin irritation or damage.