Shikakai
Sceintific name - Acacia Concinna
It is one of the Ayurvedic medicinal plants which is traditionally used as a shampoo and now a days it is also added in synthetic Ayurvedic shampoos. Shikakai has been used for centuries to cleanse the hairs and keeping the hairs in their natural colour. Hence prevents growing grey hairs.It is widely known as Shikakai.