I was over at a friend’s last weekend helping them lay some flagstone and I had my trusty Nalgene bottle with me. My friend’s wife sprayed their young child with some suncreen and some of the mist got on my Nalgene bottle. Now there’s a film or possibly etching on the bottle that won’t come off using any of the household cleaners I’ve tried.
Does anyone have any clue what specifically might have caused this? Has anyone seen it before? Any idea what might remove it?