Welcome to HCM.
You are using Lomela cream, I think as suggested by your friend or somebody. It contains Hydroquinone
. Now Hydroquinone is safe to use but other two contents Tretinoin and Mometasone are potential agents to cause side effects if not used under proper guidance by dermatologist
. Tretinoin can cause irritation and Mometasone can cause hair growth and dependence in long term use.
So,you should stop using the cream immediately as it is causing color changes on your face which are not uniform.
Meet a dermatologist who can take care of both color and black heads. In between you can apply a water based sunscreen for 3-4 times a day.
Hope this information may help you. With best wishes for your skin,
Dr Sanjay K KAnodia