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Dehydroacetic Acid

Description

Dehydroacetic acid is a synthetic preservative widely used in cosmetic and personal care products. This white, crystalline powder is prized for its broad-spectrum antimicrobial properties, effectively inhibiting the growth of bacteria, yeasts, and molds. Its chemical structure, a cyclic ester of acetoacetic acid, allows it to function optimally in slightly acidic to neutral pH environments.

In skincare formulations, dehydroacetic acid is typically employed at concentrations between 0.3% and 0.6%. It is often combined with other preservatives, such as benzoic acid or potassium sorbate, to enhance its efficacy and broaden the range of protection against microbial contaminants. This ingredient is particularly valuable in water-based products, emulsions, and formulations containing high levels of natural ingredients, which are more susceptible to microbial growth.

Dehydroacetic acid is generally well-tolerated by most skin types and is considered safe for use in leave-on and rinse-off products. Its low potential for skin irritation and allergic reactions makes it a preferred choice for formulators seeking alternatives to more controversial preservatives. Additionally, its stability in various formulations and compatibility with a wide range of cosmetic ingredients contribute to its popularity in the skincare industry.