A scalp leave-on tonic BC-10 formula proven to significantly reduce hair loss due to breakage and provide a fuller look by thickening existing hair fibers. As a super serum, it combines the historically beneficial effects of niacinamide (vitamin B3), caffeine, and panthenol (vitamin B5) to penetrate and condition both hair and skin for a more balanced scalp. Naturally derived and free of parabens and artificial colorants. Use in conjunction with the other Wella Elements haircare products for 10x the keratin protection and free of sulfates and parabens. For all hair types. With natural ash tree extract. Dermatologically tested. Paraben free.