Keiras Nourishing Shampoo for dry and damaged hair with hydrolysed algin, cassia leaf extract, keratin and hyaluronic acid. The keratin acts in synergy with the hyaluronic acid, nourishing the hair fibre and restoring softness and shine. the hydrolysed algin and cassia alata leaf extract work coadjuvantly to protect against pollution and smog and rejuvenate the hair.rishing and strengthening all hair types, offering protection against the damage caused by the passing of time and ageing. For a shampoo that protects you hair, whilst also creating body and shine. For protected, soft and shiny hair, bursting with rediscovered youth.