Common sclerosants used in sclerotherapy include polidocanol and sodium tetradecyl sulfate

https://blogfreely.net/kevalahjuy/when-to-treat-varicose-veins-is-sclerotherapy-the-right-time

Common sclerosants used in sclerotherapy include polidocanol and sodium tetradecyl sulfate, agents that irritate the vein lining, triggering controlled closure and eventual absorption by the body.