Formulated for thinning hair types, the Biolage Full Rescue Invigorating Scalp Serum nourishes the scalp to promote optimal conditions for healthy-looking hair growth. Packed with antioxidants, the scalp serum works to strengthen the feeling of strands for a fuller, thicker appearance. The formula works to reduce the risk of hair fall out while lending an invigorating effect with steam-distilled rosemary oil and niacinamide.