The anti-dandruff range has been developed to tackle all types of dandruff (greasy or dry). The 14-day anti-dandruff and anti-recurrence effect has been demonstrated by a dermatologist on a panel including both types of dandruff. As a reminder: - Dry dandruff is linked to excess sebum production and a disturbance in scalp cell renewal. This dandruff looks like a white powder, does not stick to the scalp and falls onto the shoulders. Dry dandruff mostly affects dry or normal scalps. - Oily dandruff is linked to the development of a micro-organism called malassezia furfur, which damages sebum and causes flaking. They form into patches that remain stuck to the scalp. They are often linked to itching and irritation on the scalp. Eliminating dandruff becomes essential for scalp comfort.