A shiny coat is a clear indication of a healthy and content horse. Poor diet, worms, parasites, and irregular grooming can all lead to a dull and lackluster coat. Always pay attention to your horse's needs, whether the goal is preparing for a show or simply ensuring your horse remains beautiful and healthy every day.
Steps
Bathe and Groom the Horse

Use cleaning tools. Before bathing your horse, soak all brushes (including handheld brushes and combs) in warm water mixed with a little dish soap. Clean the brushes thoroughly and dry them in the sunlight.

Groom regularly. Sweat salt can dull the horse's coat and irritate the skin if grooming is not done regularly. Grooming helps remove dry skin and dead hair, while also distributing natural oils throughout the horse's coat.
- You should make an effort to polish your horse's coat. With consistent and long-term care, you will see results.

Bathe your horse only when necessary. Bathing a horse frequently with soap can dry out the coat, cause it to lose its luster, and strip away natural oils. There is no 'rule' for how often a horse should be bathed. On the other hand, bathing also helps wash off sweat or dirt. Consider bathing your horse before a performance or when its coat is covered in mud.
- Watch for dandruff to schedule proper bath times. Bathing too often or too infrequently can lead to dandruff. If not bathed regularly and thoroughly, dandruff can accumulate. However, excessive bathing can strip the horse's natural oils and also cause dandruff.

Rinse thoroughly after bathing. After bathing your horse, be sure to rinse the coat multiple times to remove all soap residue, as leftover soap can cause the coat to lose its shine. Soap residue can also irritate the horse's skin and damage its natural oil layer.
Provide adequate nutrition for your horse

Ensure a balanced diet for your horse. A good nutrition plan always includes enough protein and fatty acids, depending on the horse's activity level and medical needs. Grazing horses also require full nutrition. You should consult a nutrition expert for professional advice on how to ensure your horse is receiving a balanced diet.

Incorporate dietary supplements into the horse's diet. Using supplements for horses as instructed is an effective way to enhance nutrition. You should consult with a veterinarian if you plan to add supplements to a horse with nutrient deficiencies. Common ingredients in supplements that support skin health include vitamin A, B vitamins, biotin, methionine, lysine, zinc, fatty acids, and vitamin E.

Add oil to the horse's diet. A deficiency of fatty acids like omega-3 and omega-6 can also cause the horse's coat to lose its shine. Many people regularly add oil to their horse's diet. Be sure to carefully read the instructions before adding oil to your horse's meals.
Assess the horse's health

Determine if the horse needs deworming. Worms can cause the horse's coat to become rough and dull, leading to lethargy, bloating, and stunted growth in foals. You should observe these symptoms and consult a veterinarian about how to eliminate parasites.
- Monitoring parasite eggs in the manure is the easiest way to detect worms and parasites. A veterinarian can help you select an appropriate deworming plan for your horse's needs.
- Grazing horses tend to be freer and less likely to have parasites than horses kept for shows. If you own show horses, be sure to keep the stables clean.

Evaluate for underlying health issues. Changes in coat condition can be a sign of an illness that requires veterinary examination and treatment.
- Fungal infections can cause the horse's coat to become matted or clumpy. Common signs of fungal infections include weight loss, abdominal pain, diarrhea, and nasal discharge.
- Endocrine disorders can also make the horse's skin dry and the coat brittle and dull. You should consult a veterinarian if you notice any troubling signs in your horse.

Treat allergies. Allergies can cause discomfort for horses and lead to coat issues. You should consult a veterinarian about how to help the horse manage allergies.
Restore the horse's beauty

Spray silicone on the horse's coat after bathing. Silicone helps enhance the appearance of the horse's coat. Be cautious when spraying silicone over the horse's body, except for the saddle area. You can apply it to the coat and legs to prevent dust from sticking. Products like silicone help improve the shine of the horse's coat.

Use oil-absorbing paper to remove dust. Oil-absorbing paper will remove any remaining dust around the horse's face. Carefully smooth the paper over the horse's face, being careful not to disturb the coat. You should remove any dust from the horse's face before it starts its performance.

Apply baby powder or cornstarch on the horse's legs. This will highlight the horse's legs and improve its overall appearance. You should apply powder to the horse's legs on the day of the performance.
Warning
- Follow the instructions when using supplements and avoid giving the horse excessive amounts of foods containing iodine or selenium, as these substances can be toxic in large doses.
- Avoid using coat-shining products around the saddle area or reins to prevent slipperiness.
- Do not apply oil near the horse's eyes or muzzle in hot weather to avoid causing burns.
