Dr Clauder’s Hair & Skin – Pigment Active Algosan supports the dark pigmentation of the coat. Dark pigmented coat colours can be refreshed with Dr Clauder’s Algosan. Dr Clauder’s Hair & Skin – Pigment Active Algosan contains 100% natural seaweed (Ascophyllum Nodosum). These contain minerals, proteins, vitamins and trace elements in an optimal natural composition. Through decades of practical experience, it is known that Ascophyllum Nodosum has a colour strengthening effect on the weaker dark pigmentation and also has a positive effect on sensitive and vulnerable skin.