Can Horses Get Sunburn? What Every Horse Owner Needs to Know.

If you have ever wondered whether your horse needs sun protection, you are not alone. Many horse owners are surprised to learn that horses can indeed get sunburned, just like humans. While a horse's coat offers some natural defense, certain horses are especially vulnerable to UV damage, and the consequences can be painful and even dangerous.

Understanding equine sunburn is not just about comfort. Repeated sun exposure can lead to serious health issues, including an increased risk of skin cancer. The good news is that sunburn is entirely preventable with the right knowledge and protective gear. In this guide, we will cover which horses are most at risk, how to recognize sunburn symptoms, and proven strategies to keep your horse safe.

A high-quality UV mask protects the most vulnerable areas of a white-faced horse from painful sun damage and long-term health risks.

Which Horses Are Most at Risk for Sunburn

Not all horses face the same level of risk from the sun. The key factor is pigmentation. Horses with light-colored coats, white markings, or pink skin lack sufficient melanin, the natural pigment that helps block harmful UV rays.

The breeds most commonly affected include:

• Paints and Pintos with extensive white facial markings
• Appaloosas with spotted coats and pink skin patches
• Cremellos, perlinos, and other double dilutes with pale coats and pink skin
• Gray horses that have lightened with age, especially those with white faces
• Any horse with bald faces, white muzzles, or white leg markings

The most vulnerable areas on these horses are where the skin is thin or exposed: the muzzle, around the eyes, the ears, and white patches on the legs. The muzzle is particularly susceptible because horses graze with their heads down, exposing this sensitive area to direct sunlight.

If your horse falls into any of these categories, investing in quality UV protection gear is not optional. It is essential for their long-term health and comfort.

Signs and Symptoms of Sunburn in Horses

Recognizing sunburn early can prevent more serious damage. The signs of sunburn in horses mirror what you might see in humans, making them relatively easy to identify if you know what to look for.

Early signs include:

• Redness or inflammation, especially on the muzzle and around the eyes
• Skin that is warm or sensitive to the touch
• Peeling or flaky skin as the burn begins to heal

More severe sunburn may show:

• Blistering or oozing skin
• Crusting or scabbing
• Cracked skin that may bleed
• Head shy behavior (your horse may resist being touched or bridled)

Sunburn typically appears on the face and nose first, but horses with thin coats or extensive white markings can also burn on their backs. If your horse seems uncomfortable being brushed, tacked up, or ridden during sunny seasons, check for redness and sensitivity on their back skin.

Repeated sunburn is not just painful in the moment. It can have lasting consequences. According to veterinary research from Carolina Equine Hospital, horses prone to recurrent sunburn have an increased likelihood of developing squamous cell carcinoma, a common form of skin cancer. Prevention is always better than dealing with the aftermath.

Identifying early signs like redness and peeling on the muzzle helps owners intervene before skin damage becomes severe or cancerous.

Understanding Photosensitivity vs. Simple Sunburn

Here is where it gets a bit more complicated. Not all sun-related skin issues in horses are simple sunburn. There is a condition called photosensitivity that looks similar but has very different causes and requires different treatment.

Simple sunburn is caused by direct overexposure to UV rays. It is external and preventable with shade and protective gear.

Photosensitivity is an internal condition where compounds in the horse's bloodstream react with sunlight to damage skin cells. According to The Horse, a leading equine health publication, it is often triggered by:

• Certain plants such as St. John's Wort, alsike clover, buckwheat, and perennial ryegrass
• Liver dysfunction that prevents the body from processing chlorophyll byproducts
• Certain medications including some antibiotics and diuretics

Photosensitivity tends to cause more severe symptoms than simple sunburn, including extensive blistering, oozing lesions, and skin necrosis (tissue death). If you suspect photosensitivity rather than sunburn, contact your veterinarian immediately. They may need to perform blood tests to check liver function and identify the underlying cause.

Understanding this distinction matters because managing photosensitivity requires addressing the root cause (removing toxic plants, treating liver disease, or changing medications) in addition to providing sun protection. For more on why UV protection matters for overall equine health, see our article on the importance of UV protection for horses.

Proven Methods to Prevent Sunburn in Horses

The best approach to sunburn is prevention. Here are the strategies that actually work, backed by veterinarians and equine health experts.

UV-Blocking Fly Masks and Sheets

Physical barriers are the most reliable form of protection. A quality fly mask with UV protection shields the most vulnerable areas: the eyes, eyelids, and muzzle. SmartPak Equine recommends looking for masks that offer at least 90% UV blocking capability.

Our UViator CatchMask Fly Mask with 90% UV Protection is specifically designed for horses at risk of sun damage. The extended nose coverage protects the muzzle where sunburn often strikes first. For horses needing maximum coverage, the UViator with Ears and Nose provides full-face protection including the ears, which are often overlooked but highly susceptible to burning.

What sets our UViator line apart is the Textilene® fabric, a specialized material manufactured in Alabama that blocks 90% of UV rays while maintaining 78% air permeability. This means your horse stays protected without overheating. The dartless design eliminates vision impairment and reduces wear points, making these masks comfortable for all-day wear.

Fly sheets with UV protection can also shield the back and sides of horses with thin coats or extensive white markings. When combined with a quality fly mask, you create comprehensive protection against both sun and insects.

Sunscreen and Zinc Oxide

For areas that cannot be covered by masks or sheets, sunscreen is your next line of defense. Here is what you need to know:

• SPF matters: According to the FDA, SPF 15 filters about 93% of UVB rays, SPF 30 filters 97%, and SPF 50 filters 98%. Higher SPF provides marginally better protection but requires the same reapplication schedule.
• Zinc oxide paste (the same kind used for diaper rash) creates a physical barrier that reflects UV rays. It is inexpensive, effective, and safe for horses.
• Human sunscreen can work in a pinch, but choose formulas designed for sensitive skin or babies. Avoid products containing PABA, as some horses are sensitive to this chemical.
• Colored sunscreens make it easy to see when the product has worn off. Bright pink or blue zinc oxide on your horse's nose might look silly, but it helps you know when to reapply.

The challenge with sunscreen is that it needs frequent reapplication. Horses grazing will rub it off on grass. Sweat, rain, and dunking heads in water tanks all reduce effectiveness. Plan to reapply at least every two hours during peak sun exposure.

Management and Shade Strategies

Sometimes the simplest solutions are the most effective. Limiting sun exposure during peak hours (10am to 4pm) dramatically reduces burn risk.

Practical management strategies include:

• Night turnout: For highly susceptible horses, turning out at dusk and bringing them in at dawn eliminates sun exposure entirely.
• Shade structures: Run-in sheds, shade sails, or even strategically planted trees give horses a retreat from direct sunlight.
• Stabling during peak hours: If night turnout is not practical, keeping horses indoors during the brightest part of the day works well.

Monitor the UV index on weather apps to gauge risk levels. The higher the number, the more important protection becomes. UV levels typically peak around midday, so ensure your horse is either shaded or wearing protective gear during these hours.

Scheduling turnout during dawn or dusk avoids the peak UV hours when the sun is most damaging to a horse's sensitive skin.

Treating Sunburn When It Happens

Despite your best efforts, sunburn can still occur. Here is how to help your horse recover.

Immediate steps:

1. Remove the horse from sun exposure immediately. Further UV exposure will only worsen the damage.
2. Apply cool water or cool compresses to affected areas to reduce inflammation.
3. Use aloe vera gel or soothing creams designed for sensitive skin to provide relief.

Ongoing care:

• Keep the horse out of direct sunlight until fully healed. This may take weeks or even months for severe burns.
• Do not ride a horse with a sunburned back. The saddle will cause pain and may damage healing skin.
• Gently clean any cracked or scabbed areas to prevent infection.
• Apply topical antibiotic creams if skin is broken.

When to call the veterinarian:

• If blistering or oozing is extensive
• If your horse shows signs of photosensitivity (severe swelling, widespread lesions)
• If the burn does not improve within a few days
• If you suspect liver involvement (jaundice, lethargy, loss of appetite)

Remember that recovering from sunburn takes time. Be patient and consistent with protection to prevent re-injury.

Protect Your Horse with Medical-Grade UV Protection

At Kensington Protective Products, we have spent over 70 years developing gear that shields what matters most. Our philosophy is simple: if you need sunglasses, your horse needs them too.

The UViator fly mask collection represents the gold standard in equine UV protection. With 90% UV blocking capability, our masks protect horses from the cumulative damage that leads to sunburn and increases cancer risk. The Textilene® fabric is formulated to withstand fading, fire, mildew, and extreme weather while remaining breathable and comfortable.

Every UViator mask is backed by our lifetime guarantee. We are that confident in the durability of our construction. For horses with medical conditions like uveitis, pink skin, or pale eyes, this level of protection is not a luxury. It is a necessity.

Not sure which mask is right for your horse? Our Fly Mask Guide walks you through sizing, fit, and feature options to help you make the best choice.

Do not wait for the first sunburn of the season to think about protection. Shop our 90% UV blocking collection today and give your horse the medical-grade protection they deserve.

Frequently Asked Questions

Q1: How can you tell if a horse has sunburn? A: Look for redness, inflammation, and peeling skin on vulnerable areas like the muzzle, around the eyes, and on white leg markings. The skin may be warm or sensitive to touch. In severe cases, you may see blistering, scabbing, or cracked skin. Your horse may also become head shy or resistant to being touched or bridled.

Q2: Can horses get sunburn on cloudy days? A: Yes. UV rays penetrate cloud cover, so horses can still burn even when the sun is not directly visible. According to the Skin Cancer Foundation, up to 80% of UV rays can pass through clouds, making protection important even on overcast days.

Q3: What is the best way to prevent sunburn on a horse's nose? A: The most effective protection is a fly mask with extended nose coverage that offers 90% UV blocking. Zinc oxide paste or high-SPF sunscreen can supplement protection, but masks provide consistent coverage without the need for frequent reapplication.

Q4: Is human sunscreen safe for horses? A: Many human sunscreens are safe for horses, particularly those formulated for babies or sensitive skin. Choose SPF 30 or higher and avoid products containing PABA, which some horses are sensitive to. Zinc oxide paste is often a better choice as it creates a physical barrier and is less likely to cause reactions.

Q5: Can sunburn in horses lead to skin cancer? A: Yes. Repeated sunburn increases the risk of squamous cell carcinoma, a common form of skin cancer in horses. Horses with white or pink skin are most at risk. Prevention through UV protection is essential for horses prone to sunburn.

Q6: What plants cause photosensitivity in horses? A: Common culprits include St. John's Wort, alsike clover, buckwheat, and perennial ryegrass. These plants contain compounds that react with sunlight to damage skin cells. Secondary photosensitivity can also occur due to liver damage from plants containing pyrrolizidine alkaloids, such as ragwort and groundsel.