During treatment, there will be a bright flash of light from the Lumecca that feels like a light elastic sensation. Redness and a slight warming of the skin are normal after treatment and usually subsides within an hour. Over the next 24-48 hours, you may see a darkening of pigmented spots; the week after, the pigmented lesions flake off, leading to an evening out of skin tone. After treating vascular lesions, you may see the vein blanch and disappear or see a color change in the vessel, which dissipates after a few days.