It rehabilitates hair fiber, re-densifies, nourishes and moisturizes its structure. As a result, the hair is instantly rejuvenated and its density effectively increases. Deep Rehab Oil (A): Highly nutritious and moisturizing oil enriched with argan oil. It makes hair brighter, softer and easy to comb, repairing damaged hair cuticles. Deep Rehab Booster (B): Activator rich in hyaluronic acid that penetrates deeply, filling the hair structure and increasing its consistency. It adds body and tone to your hair, making it look younger.