Kerastase Nutritive Masquintense Irisome THICK HAIR 500mL Hair Care This is an intensely nourishing hair mask designed specifically for thicker hair types. It is formulated with conditioning polymers and niacinamide to provide deep nourishment, shine, and softness, helping to maintain hair's lightness and movement. The mask has a rich, thick, white creamy texture, making it an ideal treatment for very dry hair. It's recommended to apply the mask to washed and towel-dried hair, leaving it on for 3 to 5 minutes before rinsing thoroughl