Dehydroactic Acid

Dehydroacetic Acid is an artificially made chemical agent used in skincare and cosmetic formulations mainly for its preservative properties. It is also effective in preventing the development of bacteria, mold, and yeast, which in effect prolongs the product's life and maintains it intact over some time. It is noted for its popularity in natural and organic formulations since it is deemed to possess low irritation and sensitization potential compared to conventional preservatives.
Dehydroacetic acid is chemically a carboxylic acid. It is of ideal structure that interferes with the cellular mechanism of microbes effectively. It interferes with microbial cell membrane and inhibits microbial proliferation, which helps in product protection against spoilage. This makes it an excellent choice for water-based formulations where microbial contamination is most expected.
Besides its preservative action, it imparts a slight acidifying action, which can be used to balance the pH of the total formulation. This is useful in ensuring stability and increasing the effectiveness of the product. Normally, it is combined with other preservatives, for instance, benzyl alcohol or phenoxyethanol, acting against a wide range of microorganisms.
DHA has several functions other than preservation in cosmetics. It modifies skin-feel and performance of cream, lotion, and gel products; its action on texturization and stabilization.