Having Friesian crosses as well as a black TN Walker at one point, I have frequently struggled with keeping their coats black and not fading out in the summer. My TN Walker would have a jet black coat when his summer or winter hair came in, but by the end of the season, he faded to almost a dun color! He was the one horse that seemed to have the most significant color change.
Mane and Tail dye.... Bigen!
Proper nutrition: A well-balanced
diet that includes plenty of nutrients such as protein, vitamins, and minerals is
essential for maintaining a healthy and shiny coat. Copper deficiency can cause a coat to bleach excessively in the sun. Some coat supplements contain Paprika, which does seem to help prevent bleaching, although it will test if you show your horse.
Regular grooming: Grooming your
horse regularly helps to distribute natural oils throughout the coat, which can
help keep it shiny and healthy. Use a soft brush to remove dirt and debris, and
a curry comb to remove loose hair and promote circulation.
Sun protection: Exposure to the
sun's UV rays can cause fading and damage to your horse's coat, especially for
black horses. Provide shade or use a fly sheet or UV-protective coat to help
protect your horse's coat from the sun. There are also some coat sprays that contain sunscreen, which I would recommend.
Rinse off sweat: Sweat is very salty, which can cause further damage and bleaching to the horse's coat. If the weather is conducive to it, hose off your horse after exercise to keep the coat free of sweat. This will also help with flies.
Remember that each horse is unique
and has different coat care requirements, so it's essential to monitor your
horse's coat regularly and adjust your care routine accordingly. If you have
any concerns about your horse's coat or overall health, consult with a
veterinarian or equine specialist.
Both these horses below are jet black when they first change coats with the seasons. The one on the left (since passed away), would always turn almost a light bay color by the end of summer. My Friesian will turn reddish, as will the tips of his mane and tail, in the sun.