La Luxe Paris Concentrated Serum to Combat Skin Imperfections 250ml A highly concentrated serum with an innovative formula to combat skin imperfections to help improve the appearance of a woman's body and the firmness and smoothness of her skin. Thermal fat burning technology. Apply the serum in circular motions to problem areas of the body such as the thighs and buttocks... A pleasant feeling of warmth and slight redness may last from 30 to 40 minutes.