Dog Tear Stains: Why They Happen and What You Can Do About Them

If you have a white or light-colored pet, you've probably noticed those stubborn reddish-brown tear stains beneath the eyes. Dog breeds like Maltese, Bichon Frise, Poodle, Shih Tzu, and Coton de Tulear are especially prone to tear staining, leaving many pet parents wondering if they're doing something wrong. The good news is that tear stains are common, and they're not always a sign of poor hygiene. While wiping your dog's face every day can help keep the area clean, long-term improvement often comes from addressing the underlying cause — not just cleaning the symptoms.

What Causes Tear Stains?

Tear stains develop when tears overflow onto the fur, a condition called epiphora. As the moisture sits on the hair, naturally occurring compounds in tears called porphyrins can leave behind the familiar reddish-brown discoloration.

There isn't one single cause. Several factors may contribute, including:

• Blocked or narrow tear ducts
• Eye irritation or allergies
• Facial structure in certain breeds
• Environmental irritants such as dust or pollen
• Food sensitivities
• Skin yeast or bacterial overgrowth caused by constant moisture

Because there are so many possible causes, persistent or excessive tearing should always be evaluated by your veterinarian to rule out eye disease or other medical conditions.

Can Diet Make a Difference?

For some dogs and cats, yes. While nutrition won't solve every case of tear staining, many veterinarians recognize that diet can influence skin health, immune function, and digestive health — all of which may affect pets with food sensitivities. Feeding a complete and balanced diet made with high-quality ingredients may help reduce unnecessary inflammation. If your veterinarian suspects a food sensitivity, switching to an appropriate diet may improve both skin health and excessive tearing over time. It's important to remember that results are gradual. Coat color won't change overnight, since existing stained fur must grow out before you'll notice a cleaner appearance.

What About Supplements?

Supplements aren't a cure for tear stains, but certain nutrients may help support overall skin, eye, and immune health.

• Omega-3 fatty acids — particularly EPA and DHA from fish oil — help support a healthy inflammatory response and healthy skin. They are commonly recommended by veterinarians for dogs with sensitive skin or environmental allergies.
• Probiotics — the digestive system and immune system are closely connected. For dogs with digestive sensitivities, probiotics may help maintain a healthy balance of beneficial bacteria, supporting overall gut health. Although probiotics don't directly remove tear stains, maintaining digestive health may be beneficial for dogs whose excessive tearing is associated with food sensitivities.

Daily Habits That Can Help

Simple daily care can make a noticeable difference.

• Gently wipe away tears once or twice a day with a soft, damp cloth.
• Keep the hair around your pet's eyes neatly trimmed to reduce moisture buildup.
• Wash food and water bowls regularly, especially plastic bowls that can harbor bacteria.
• Feed a nutritionally complete, balanced diet.
• Make sure your pet stays well hydrated.
• Schedule regular veterinary checkups if tearing suddenly worsens or is accompanied by redness, squinting, or eye discharge.

Beware of "Miracle" Tear Stain Products

Many products promise to eliminate tear stains in just a few days. Unfortunately, there is no scientifically proven supplement that permanently removes tear stains in every dog. In the past, some tear stain products even contained low-dose antibiotics, which are no longer recommended because of concerns about antibiotic resistance. Instead of looking for a quick fix, focus on identifying the underlying cause and supporting your dog's overall health.

The truth is that tear stains are often a sign to look beyond the surface. A healthy diet, appropriate supplements when recommended by your veterinarian, good daily hygiene, and proper medical evaluation all work together to support healthier eyes and cleaner coats. Every dog or cat is different, and what works for one may not work for another. But by addressing the cause — not just the stain — you'll give your furry friend the best chance for healthier eyes and a brighter, happier face.