What is the best treatment for a burn scar?

Depends on scar: All scars should be protected from the sun, moisturized daily and pressure or massage may help. Sometimes a special garment is prescribed for burn scars to keep pressure on them. Topical silicone has been helpful in some cases as well. Remember it takes about a year for a scar to mature. Usually reddness from a scar will diminish during this time making it less noticeable.