Hmm.. can you dye a horses mane lighter without chemicals? (Crow would be so cute with white stripes xD)
Not that I know of yet! I would love to be able to lighten my hair without the harsh chemicals! Maybe then it wouldn't be so damaged
The best thing I can think of is Peroxide which is pretty harmful, at least to humans but other than that theres nothing without chemicals unfortunately.
OH WAIT! There is one more thing, lemon juice. If you put lemon juice on hair and leave it out in the sun it will lighten up.