<s>[INST] i used a gel to remove pimples . it dried my skin and developed some kind of black spot at the sides of my lips.. how do i remove that? [/INST] Hi!, Welcome To Chat Doctor forum, Is the black spot exactly at the place where you had applied the gel. If it is so then probably the gel was too strong or irritant to cause an irritant reaction and has lead to a post inflammatory pigmentation. In that case just wait for few days till it resolves on its own. If not then apply a mild steroid cream with antibiotic cream for just 2 days over the spot. Also use a good sunscreen over the lesions in daytime. Gradually the spot will go away. Regards, Chat Doctor.  </s>