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There are a few sittings to be completed before the laser takes effect, not just in one sitting. Have you tried using
hydroquinone based skin bleaching creams. If there is no relief even after the
laser treatment you may need to try
skin grafting to remove these scars and pigmentation. What you are using are
steroid creams which will not change the scar much and will also not reduce the pigmentation. Eat plenty of fresh fruits and green leafy vegetables. Drink plenty of water. Avoid sun exposure which will darken the spots.