Preservative boosters are the ingredients added to cosmetics mainly to improve the efficiency of the preservative actives. Preservative boosters are generally added to cosmetic formulations to limit the amount of traditional preservative use. Preservatives are usually added to the cosmetics to ensure higher cosmetic product quality along with prevention of microbiological contamination of a cosmetic product during storage. There are higher chances of contamination of the cosmetic products despite of addition of conventional cosmetic preservatives in particular with those preservatives with amino acids inclusions. Hence, there has been a need for preservative boosters to overall improve the cosmetic products.
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Preservative boosters are gaining traction among the cosmetic ingredient companies as these products not only improve the efficiency of preservatives but also with additional benefits of preservative boosters as a stabilizer, surfactant and allows improved penetration of the preservative actives. Various factors need to be considered while selecting the preservative boosters such as moisturizing effect, deodorant active, high water solubility, unaffected by chemical constituents of other cosmetic ingredients, and has a higher synergistic effect. The preservative boosters should also have minimum skin irritation. The other factors such as country wise regulations, marketing requirements, environmental safety need to be considered while selecting preservative boosters. Ethylhexyglycerin has gained importance among preservative boosters as it performs various functions such as deodorizing agent, emollient, mild humectant while other preservative boosters like Hydroacetophenone has gained popularity as a preservative booster as it acts as an antioxidant and anti-irritant. The other properties of preservative boosters include the moisturizing effect, boost the foam and viscosity of for shampoos and shower gel product formulations.
Some of the key players operating in the global preservative boosters market are Ashland, Clariant, Lonza, Chemspire Ingredients and others.