Italy’s Sinerga has launched a new concept of protection with two multifunctional ingredients. These, it said, address the trend towards preservative-free formulations
Italy’s Sinerga has launched a new concept of protection with two multifunctional ingredients. These, it said, address the trend towards preservative-free formulations in which multifunctional ingredients blend preservation efficacy with other functions, such as soothing, moisturising or odour masking.
Mintiol is a natural and COSMOS-certified microbial inhibitor with soothing and refreshing properties. It is a mint derivative that Sinerga claimed is able to act, at about 2%, both as a complete preservative solution and at 0.5-1.6% to boost other preservatives, including the most commonly used sodium benzoate and potassium sorbate.
Parfiol is a blend of esters and aromatic alcohols that is said to combine formulative protection with odour-masking properties, “conferring a pleasant creamy olfactory note to the cosmetic”. It fully preserves the formulation at 1% levels or it can be used to boost the co-microbial inhibitors.
Both have a wide spectrum of activity on microorganisms and are effective in a wide range of pH, from 4 to 9. MIC analysis and challenge tests for several formulations containing Mintiol and Parfiol are available on request.
