Kelp grows abundantly in the costal areas of Brittany and looks like large seaweed stuck firmly to the rocks. It is usually visibly when the tide is low as it grows no lower than 20 meters. For centuries, the Japanese have eaten this type of seaweed known as Kombu and even offer it to the Gods during certain rituals. High mineral, vitamin and amino acid content make it an effective cosmetic ingredient. When combined with Zinc to optimise effectiveness, both powerful ingredients make up the « Chronomat System  » which has a triple sebum-control, antibacterial and anti-inflammatory action on oily skin.