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The only best treatment for red birth marks(hemangioma
or portwine stain) is laser
.Laser machines are specific for such kind of birth marks ,which target only the haemoglobin
component of the tissue.You might require 4-5 sessions of laser at an interval of 1 -2 months .This would gradually reduce the mark.In early stages we used to injections also on these red birth marks.Kindly let me know where you belong to ,so that i can suggest you a good place for lasers.