A roots-to-ends hair serum that absorbs quickly with a light, face-serum-like texture, so it adds no extra weight. Panthenol, rosehip seed oil and amino acids lock in moisture and strengthen the hair shaft, smoothing frizz, dryness and split ends. Works on straight, curly, wavy, color-treated, frizzy and very dry hair, and does not need to be washed out.