Product Overview Help tackle the causes of thin-looking hair with Nioxin Hair Booster 50ml. Formulated with Nioxin’s CoZyme-10® Vitamin Complex for deep nourishing and strengthening, this intensive treatment will leave thin and fragile hair feeling fortified and better protected. Defend weak hair which has low density with this keratin-rich treatment whilst boosting thickness and shine. Directions for Use Use twice daily. Apply Nioxin Intensive Treatment Hair Booster from root to tip once in the morning and again in the evening before applying Nioxin Scalp Treatment. Spread using your fingertips to areas of hair which are thinning. Your skin may temporarily go red after application - this is due to the booster’s vitamin-enriched formula and is completely normal.