Just had a bath and noticed this on my foot - it’s about 0.5mm, totally flat and a light tan colour. The weird thing is I’m POSITIVE it wasn’t there a couple of days ago, I have baths every few days and spend most of the bath staring at my feet so would’ve noticed. Not too concerned as it’s flat, not itchy, round and the same colour, just checking it’s not something I should bother the GP with?