All the brands on this site are professional products made to strict cosmetic standards, and adverse reactions are rare. As with all cosmetic products, some people are sensitive to some ingredients. There are no standards for the term "hypo allergenic", it is simply an unsubstantiated marketing tool used by the cosmetics industry. However, Grimas has made available a product called 'Pure' which has no bactericides, and provides an alternative for those sensitive to parabens and chemical preservatives (chlorine, bromine etc.) and is also perfume free. Also, the colours used are from the strictest category - EEC/76/768.