Conversation: The conversation between human and AI assistant.
[|Human|] Hello doctor, im noticing some black lines or patch is coming on my forehead and i have so many pimples marks on my face its worse i start duac gel just 3 days ago for them...im taking vitamin a, e, c,d tablets as well everday...im worried abt my black patch on forehead .what should i do?my email is YYYY@YYYY
[|AI|]  Hi dear if black patches come on its own it's called plasma. And if after acne it's called post acne pigmentation. The first condition is a bit difficult to treat. But post acne can be treated easily. Now the main culprit here is sunlight. But as u have acne problem u cannot use a normal sunscreen as it is oily. So I suggest u to use sun cote. It is water based sunscreen and very effective. Thank u.