Dandruff is generated when the renewal of scalp cells increases speed: if normally the cells appear as an invisible tissue, in the case of dandruff, they aggregate forming scales . This mechanism triggers redness and itching, which can increase with superinfection: a fungus takes over , which feeds on the cells. The function of an effective anti-dandruff shampoo, such as the Solid Anti-Dandruff & Oily Hair Shampoo, is to regulate the scalp and keep fungal infections under control . In this solid product for oily hair and with dandruff, the extracts of Chelidonium and Apium graveolens (the common Celery) have an antifungal effect , help eliminate scales and annoying itching , facilitating the reconstruction of the stratum corneum of the scalp. In any case, to obtain a visible result, solid shampoo should be used continuously for at least a couple of months . Active principles: - Chelidonium majus extract : natural antimicrobial and antifungal specific for dandruff - Apium graveolens extract : maintains the microflora of the scalp intact This product is natural, not only designed for your well-being, but also for that of the planet: composed only of natural ingredients, even its packaging is green (made of 100% recyclable and plastic-free FSC cardboard). How to use: wet the scalp and hair and massage the solid shampoo directly to create a foam, or first create it in your moistened hands and then apply it to the hair. Leave the shampoo on for a few minutes and rinse. NB: It is important not to leave the solid shampoo in a closed container just after use, as it could melt. Let it dry hanging with its natural hemp cord.