Les Petits Bains de Provence Castor Hair Mask 200ml is the perfect nourishing mask to treat damaged and dull hair. The essential treatment to add volume and nourish color-treated or chemically treated hair. Castor oil is known to have nourishing and regenerating properties, which improve the quality of hair after use. Once a week, after shampooing, use this mask for a few minutes and rinse. The hair fiber is stronger, more hydrated and softer. Just massage a few seconds on wet hair, let it sit for a few minutes and rinse. The hair will have a different, more moisturized texture without weighing it down. Over time, hair will also feel fuller and longer without breakage.