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In this case since it is already a few days now after the wound was caused, and also because the scab has formed and there is no bleeding at present, therefore there is not much that can be done at this time. It will heal naturally forming a scar, and though the scar may be very prominent at first, but it will gradually improve over the course of about a year. Be sure to use sun-screen every day for best results. If after a year you find that the scar has not faded, then may contact a dermatologist or plastic surgeon for further treatment. You can always have the scar revision surgery done by a plastic surgeon and even now this is an option. In fact using of the glue for wounds in areas of high skin tension such as the forehead is not recommended.
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