Release on Skin of Living Probiotics Microcapsules

In recent years there has been an increase in the number of products that have probiotics in their formula as active ingredient. Due to labelling requirements regarding the concentration of microorganisms present in formulations and product stability considerations, many companies have chosen to incorporate lysates of these microorganisms instead of the active microorganism, what are called postbiotics. Although sometimes postbiotics may have the same effect than probiotics, some of the bioactive effects of these organisms are lost during the lysate treatment. To solve this challenge, and in order to be able to incorporate living probiotics in cosmetics matrixes, the present work has aimed to develop a new microencapsulation system that allows stabilizing the probiotic microorganism while keeping it viable. Additionally, it protects the microorganism from the cosmetic matrix avoiding its release in the product to meet the microbiological requirements of the products and finally to trigger the release of the microorganism on application to the skin, maximizing the viability of the microorganism at the time of application and its beneficial effect.To this end, work has been done to select the appropriate coating materials as well as the encapsulation systems that minimize the loss of viability during the microencapsulation process.