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First, you need to understand that scar treatment depends on its depth and lenght. Whether your scar is permanent or not, it is very important to evaluate it. Mostly scar lightens and becomes equal to the surrounding skin with passage of time. However, scars which are deep becomes permanent. Such scar will not go away with any creams or gels. Best treatment for permanent scar is reversal by plastic surgery or it could recover to some extent with C02 laser.