Krastase soliel masque uv defense active is an after sun hair treatment that reinforces and repairs dry sun damaged hair it contains a photo dfense filter that protects hair from uv damage and ceramide for extra cuticle strength that may have been lost through exposure to chlorine salt and uv rays cationic silicone aids with replenishment of the hydrophobic film to seal the hair fibre and prevent further damage whilst the cationic derivatives improve and smooth the surface of the most dam