I have a predominately white tobiano horse with pink nose, and have found that omega supplements has been very beneficial to less sun burn on him. mine also will not keep mask on, and have bought everything and anything to put on his face/nose to protect him. After speaking with a vet that specialized in herbal remedies, told me that omegas are really great for horses that sun burn easy and less burning occurs. I use the omegas faithfully for all my horses now and have found this a huge benefit and added protection for my white horse, but also use a mild non greasy and non scented sun screen for his nose. not had any burning for several years now.
"There's a difference between interest and commitment. When you're interested in doing something, you do it only when it's convenient. When you're committed to something, you accept no excuses; only results." - Kenneth Blanchard