Hello, there are a few products that are aviable on the internet and at feed stores or tack stores. They are mosquito and fly repellents that are in the form of a lotion that may be easier to apply. My only concern is that it is so close to the eyes and you would have to take extra care not to let anything get into the eyes so that irritation and possible scratching does not occur. I am going to send you a few links to the lotion so that you can find where to purchase it. Also Skin So Soft by Avon can work as well applied in a small does around the head. Please let me know if there is anything else I can do for you.
Pet Guard is listed on the page here :
Here are fly collars as well: