Product description The products of the Advanced Formula Line are an ideal addition to the DuoLife Kertain Hair Complex dietary supplement. The combination of the benefits of the liquid preparation and the unique properties of the hair shampoo and conditioner allow you to take care of the health and proper condition of hair and scalp and maximise mutual effect. The hair shampoo and conditioner are ideal for daily use. The experience in the production of dietary supplements from the Liquid Formula i Medical Formula series has enabled us to concentrate on natural solutions again. The scalp and hair care we offer is based on nature - Powered by Nature! By focusing on the natural origin of ingredients, the formula of the hair shampoo and conditioner is based on certified raw materials, which are approved by the international certification organisations ECOCERT/COSMOS for use in natural cosmetics. ECOCERT and COSMOS is a sign of quality and confidence in the standardization of natural cosmetics. The process for determining the naturalness of cosmetic products is the procedure included in the ISO 16128 standard. This norm determines ingredients of natural origin and introduces the so-called naturalness index of a cosmetic product. DuoLife Hair Complex products have a very high naturalness index - in the case of hair shampoo, it is 90.5%, while conditioner 95%, which results from the use of natural, certified ingredients. The DuoLife Keratin Hair Complex Advanced Formula hair is the first step to healthy, shiny and properly nourished hair. The hair shampoo contains many active ingredients and the power that comes directly from nature Directions Apply the shampoo to wet hair, massage in, rinse thoroughly, then apply the conditioner and liquid keratin, followed by another rinse.