Fibrovein is a sclerosing agent commonly used in the treatment of varicose veins and spider veins. It works by irritating the lining of the blood vessel, causing it to swell and stick together, and the blood to clot. Over time, the vessel turns into scar tissue that fades from view, effectively reducing the appearance of the treated veins. Fibrovein is administered directly into the vein through an injection during a procedure known as sclerotherapy. This treatment is minimally invasive and is preferred for its effectiveness in improving the cosmetic appearance of varicose and spider veins, as well as alleviating associated symptoms such as aching, swelling, and burning. The use of Fibrovein should be carried out under the supervision of a healthcare professional experienced in venous diseases.