For the 1st Month: Use Fortifying Densifying Shampoo every time you shampoo. Apply Revitalizing Fortifying Serum every 2 days. For the 2nd amp; 3rd Months: Use Fortifying Densifying Shampoo every time you shampoo. Apply Revitalizing Fortifying Serum twice a week. For YearRound Maintenance: Use Fortifying Densifying Shampoo every time you shampoo or alternately with another Hair Ritual by Sisley Shampoo. Apply Revitalizing Fortifying Serum every 2 days on a continuous basis. Key Ingredients: Revitalizing Stimulating Complex (Einkorn wheat Extract, Zinc, Copper, Magnesium, Vitamin B6, Vitamin E Acetate, and Provitamin B5): helps to provide an energizing sensation to the scalp Densifying Complex (Baobab proteins and Ceramide Analogue): helps reveals a visibly stronger and thicker hair quality Arginin: promotes hair vitality AlphaBisabolol of natural origin: soothes Camellia oil: envelops hair lightly, leaving it soft and supple Moringa oil: increases the hair's shine Shea oil: nourishes and strengthens the hair