Lichen planus is an idiopathic inammatory disease of the skin and mucous membranes. It was rst introduced by Erasmus Wilson in 1869. Classical LP is characterized by pruritic, violaceous papules that favor the extremities. Two thirds of the patients develop LP between the ages of 30 and 60 years, though the onset of LP occurs most commonly during the fth or sixth decade. There is no racial predisposition. Men and women are almost equally affected. Family history plays a signicant role as higher onset, higher relapse rate and more common involvement of oral mucosa is seen in cases with positive family history. In this study we registered 30 patients with Lichenied skin lesions to study the efcacy of Kadali tikshna Pratisaraniya kshar. The kadali used for making the kshar was the variety Musa balbisiana Colla. This variety is commonly available and is used for cooking traditional food dishes in Assam. The kshar was prepared in Assam State Pharmacy, Govt. Ayurvedic College & Hospital according to the classical method as mentioned by Sushruta in Ksharpakavidhi adhyaya, Chapter 11. Kadali tikshna pratisaraniya kshar showed good effect on decreasing the itching and bringing back the colour and texture of the skin. This study showed that kadali kshar can be used in Lichenied skin lesions like Lichen planus.