hi i had a small cut in my face, i immediately applied dettol and after sometime a small black spot appeared, then after two days as the small darks spots was not disappearing , i again applied dettol. which was in fact a very stupid idea, and the condition worsened, now i have big black spot on my face,, and it looks very ugly, what should i do... please help me,, and i have a marriage to attend in less then 2 weeks..