Wella SP Balance Scalp Energy Serum is a clinically proven formula that contains Wella System Professional's potent Energizing Complex. Hair is strengthened; hair loss is decreased and hair anchorage is increased and strengthened. Hair growth is maintained and thin hair is stronger. Energizing Complex consists of the following active ingredients: Caffeiene: stimulating supply of daily nutrients. Biotin: known to strengthen the structure of the hair Laurin acid: an enzyme inhibitor, reduces DHT hormone production. This hormone is the main contributor for hair loss in many people. Vitamins: important micro-nutrients are provided for healthy hair growth. Structure is improved. Ideal for people with sensitive scalps and/or hair loss. With a balanced, skin-friendly pH value, sensitive scalps are treated with Wella SP Balance Scalp Treatment Collection. The hair and scalp is prepared for hair-loss treatments.