The role of acidity in skin cleanser

The skin barrier is an obstacle to external and potentially damaging environmental, physical, chemical and microbiological factors; and it also curbs the water loss from the inner skin layers. Abused cleansing may damage or compromise the skin structures, particularly when it is not followed by thorough rinse. The cleansing process involves two main phases: wash and rinse. The rinse-off process is generally left incomplete, so inducing long-lasting damage to skin structure. The surfactant behaviour in skin cleansing varies according to the pH value. An interesting operational tool in delicate cleansing is considered: the characteristics and properties of a couple of anionic detergents, Disodium Capryloyl Glutamate and Zinc Coceth Sulphate. They exhibit a remarkable hygienic and deodorant action at acid pH values; they are easy to rinse, respect and regulate the resident bacterial flora. Besides the hygienic activity, they achieve a lasting deodorant effect. Thay are well tolerated in problem skin cases, such as in acne, oily or hyper-seborrhoeic skin and dandruff disorders.