Discover fuller-looking hair with the ROH Scalp Renew Serum, a nourishing elixir powered by peptides, amino acids and targeted actives to support longer, healthier-looking strands while caring for the scalp. Infused with soothing cucumber extract, arginine and niacinamide, the lightweight serum envelops the scalp and roots in nourishing care without weighing hair down. With continued use, strands appear fuller and healthier, while the scalp feels comfortable and refreshed.