Which compound acts as a strong alkaline when used in cosmetics?

Potassium Hydroxide is recognized for its strong alkalinity when used in cosmetics. It is a highly effective pH adjuster that can raise the pH level in cosmetic formulations, which is essential for various functions such as ensuring the effectiveness of certain ingredients and achieving the desired texture and stability in products. It is commonly utilized in products that require a higher pH to facilitate processes like emulsion formation or enhance the solubility of other ingredients.

In contrast, while Sodium Bicarbonate has alkaline properties, it is considered a milder base compared to Potassium Hydroxide. Calcium Hydroxide is also an alkaline compound, but it is primarily utilized for its medicinal properties rather than cosmetic applications. Magnesium Sulfate is known for its use as a conditioning agent and is hygroscopic, but it does not exhibit the same strong alkaline characteristics. Thus, Potassium Hydroxide is the most suitable choice when considering a compound that acts as a strong alkaline in cosmetic formulations.