Absolute alcohol is the most effective treatment of venous malformations. We created an alcoholic sclerosing solution less diffusible and we report a preliminary study on 6 patients. The viscosity of the alcohol was enhanced with ethylcellulose and we treated 7 patients with VM. Two benign skin ulcerations were observed and one patient with a large VM of the face could be treated around the eyes in a dangerous area. The results are encouraging and a larger study is being performed.