Hello everyone.
when I got my BP a few months ago I noticed this on his belly. At the time I didn't have much experience with this animals so I didn't worry too much but then after getting more familiar with them I worried a little.

The last owner told me it might be a burn so Ali made some changes in the temperature and I increased the humidity. Since then he has shed 2 times and now it looks much better. I do not have pictures of how it's looking now but I will upload some soon.

I applied a bit of Vaseline a few times when I noticed the issue but blow since he is much better I honestly forgot about it.

Pretty much all I wanna know is what this is?

Hopefully you guys can help.