Antistax Cooling Gel 125ml Contains a special bio-active ingredient called Flaven™. Stimulates the microcirculation in your legs, especially when gently massaged onto the skin. Available in Pharmacies. Specially warm summer days can be hard on your legs – and to make things worse, with light summer clothes on, they’re out there in the open for everyone to see. Antistax®, the leg specialist, now offers a Leg Chilling Gel which has a comforting, cooling and soothing effect on your legs. Antistax® Leg Chilling Gel contains a special bio-active ingredient called Flaven™. In combination with cooling and soothing agents it stimulates the microcirculation in your legs, especially when gently massaged onto the skin.