Zinc is a mineral that is particularly prevalent in skin and hair care products. Its concentration is restricted in Europe according to cosmetic regulations to 1% zinc in the final product. Zinc is present in more than thirty cosmetic ingredients, some of which are more controversial than others and have diverse actions (antimicrobial, surfactant, foaming agent, pH regulator...). At Typology, we primarily use the zinc PCA, a gentle active ingredient, non-controversial and tolerated by all skin types.