Ever since I've been back from the gym at 11 am, my under eyes and above my lip have become red and irritating. Now, a very small area of my neck is also slightly red and irritating. I come home from gym by walk, so could it have been sunburn? I had forgotten to wear sunscreen before I left the gym. I use Tretinoin 0.025% thrice a week. And I had recently started using Neutrogena Ultra Sheer sunscreen. Could that have caused anything? There was Cetrimide solution in my house, so I slightly dabbed a little on the red and irritated areas, but I felt like I had only irritated it more. So I washed my face and just applied a lot of Bioderma Atoderm Creme. What should I do to reduce this redness and irritation?