What to do about brown burn line?

I went for my last session in the package a few days ago . It was my 3rd treatment and 4th in total as i had one in another city. It was IPL on lower leg . There didnt seem to be a much of a reaction although it was slightly more painful than the others which there was zero pain, (and so far no results that I can see).

I notice now that there is a brown burn line running up the back of one leg. Not sure what would cause this as i had no tan at all . What can i do to treat this ? Will it fade/ heal?

I was not planning a next session till at least october and i was wondering if i could use a ONE TIME use of self tanner now just to wear a skirt without looking so white and not apply again self tanner again or is even that too risky?
How long must i wait till i can safely get any sunlight on my legs with a sunscreen on or is even that risky. So far this summer I have had no sun and it is getting hard to avoid completely .

The vast majority of these things resolve without need for further intervention. You should contact the clinic that performed the procedure for further advice.

Thanks JM…i like to get the professional advice on this board for further reference as i am discovering this laser place is not very well informed.

Do you have anything to share about the second part of the question related to sun, self tanners etc??!