I wonder what it causing her to do that I was joking about the chap stick but kinda wonder if some lip balm with moisturizer in it would help. Maybe even carmex Just guessing here, does she need her teeth floated?
I know what it is!!! ALL and I do repeat ALL of my horses do this!! Here in Texas we have god awful flies and mosquitoes!! They LOVE the muzzle area because they don't have to go through hair!! I keep a vet aproved insect repellant and sunscreen on them. I'll have to go to the barn and get the name. I'll post later. This stuff is AMAZING!