Dear Doctor, I am a Chinese from Singapore. 9 days ago, i had a chemical burn on a patch of skin on my face due to the use of pure tea tree oil soaked cotton wool. I have consulted local dermatologist who diagnosed it as first degree or superficial second degree burn. I was prescribed bactroban. There were no blistering, but only darkened brown skin which falls off over the first 4 days. It seems that the wound has healed, but it still has the burnt out look. I would like to ask the approximate amount of time I should give the skin to recover and stabilise fully before I can consider using other products such as hydroquinone to remove darker pigmented areas. I have a fair skin, so the colour difference is very obvious and it is lowering my self esteem. Thank you.