Normally the scalp exfoliates every 20-30 days. However, several factors such as hormonal imbalances, stress, pollution, mechanical or chemical effects, and unsuitable shampoos unbalance the scalp flora promoting the development of the microorganism Malassezia furfur, which in turn causes inflammation and intensive exfoliation. Celery seed natural extract is the main active ingredient in this line. It is clinically proven to hinder the development of Malassezia furfur yeast and reduces flaking within the very first weeks. Make sure to use the APIVITA Anti-Dandruff Shampoo. It treats dandruff effectively, cleans and soothes itching and irritations of the scalp.