I had unpleasant experience with some consumer chemicals. Removing paint from the balcony barriers, I didn't bother to cover my feet. When a small piece of pain

I had unpleasant experience with some consumer chemicals. Removing paint from the balcony barriers, I didn't bother to cover my feet. When a small piece of paint with acid in it landed on my bare foot top, I thought that was nothing special, but it started to feel burning more and more, so I had to go wash it off in the bathtub. After this happened the third time, I finally decided to tie cardboard pieces to my legs and feet. No scars were left, probably thanks to the immediate burning feel. Another time, I used so-called anti-grease cleaner, which is an alkali just stronger than common soap. Usually it comes as dense liquid like "Fairy", but that one was spray. I wondered why, and I saw it work better than the previous ones, but failed to add 2 + 2. The % of the alkali was higher, it was a lot more aggressive, that's why it was enough in smaller quantities. Washing a pan inside with a brush (I did put on protective glasses), I felt it stick to my finger, but bother washing it off. When I did, I was already feeling the skin and the flesh underneath burn, and they shrank noteably, exactly like after you touch hot stove inside surfaces, or hot gas oven grill. I feared I'd have to treat it for couple of weeks, but magically that evening the finger came to normality, and no scars were left. Whew!..