My new horse arrived in less than ideal condition. He had terrible rain scald along his back, shoulders and top line of his neck. I started using the spray twice a day, and started to see results within a week. After about a month of twice daily treatment his hair had started to grow back and he was a different horse! It look slighly longer to work on his mud fever as it was quite a nasty case, but it has all cleared up now.
This is the most amazing product, I'm so glad I tried it. Worth every penny.