Originally Posted by starlinestables
I've been using it on a black pasture horse to treat a bit of rain rot and havn't seen any fading at all and I've used quite a bit.
It's not bleaching you should worry about, it's burns. If applied to pink skin, in the sun, there have been signs precautions on the bottle, of possible burns. I used it all the time on my black gelding all the time. Never had problems.