Renuvaline How to use Renuvaline Because chronic sun damage causes irregular brown and red discoloration of the skin, skin ends up with spots and redness that no one wants to sign up for. These sun spots and broken anti aging capillaries are in the surface of the skin and make the skin look old. IPL reduces these discolorations and makes the skin tone more even and bright. It does this by heating up the structures that hold the color, damaging or destroying the blood vessel or the sun spot. So you end up with a more even skin tone, even without makeup.