What to do if i had cellulites bruise from a burn and it won't heal?

See derm/plastics: Burn scars can be difficult to treat and may require multiple modalities. I would first recommend silastic gel sheeting as the initial modality. This typically requires at least 6-10 hours a day and up to 6 months (opinions vary). Topical pressure and massage therapy may help. Use high SPF protection. Laser/IPL may help to diminish redness