As temperatures rise and days grow longer, another seasonal shift arrives alongside green grass and shedding coats: insects.

For many horses, spring marks the beginning of increased exposure to flies, gnats, and other biting insects. While external management strategies like fly masks, sheets, traps and sprays are essential, skin health also plays an important role in how horses respond to this seasonal challenge.

Supporting the skin from the inside out can be a valuable part of preparing for bug season.

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Why Spring Bugs Are More Than Just a Nuisance

Biting insects don’t just cause simple irritation. For some horses, they can contribute to:

• Itching and rubbing
• Hair loss, skin damage or sores
• Disruption of normal skin barrier function

Even in horses without severe reactions, repeated exposure to insects places ongoing stress on the skin, and therefore the body. This is where internal nutritional support becomes relevant to ensure our horses have the tools needed to maintain their health.

The Skin: Your Horse’s First Line of Defense

The skin is more than a surface layer. It functions as a protective barrier, helping regulate moisture, defend against environmental stressors, and support overall immune function.

Healthy skin relies on:

• Structural integrity of skin cells
• Proper hydration
• Balanced inflammatory responses
• Adequate nutrient availability

When these factors are supported, the skin is better equipped to handle seasonal challenges such as insect exposure.

The Role of Omega-3 Fatty Acids in Skin Health

Omega-3 fatty acids are a key component of cell membranes throughout the body, including the skin. One of the primary omega-3s found in equine diets is alpha-linolenic acid (ALA), which is abundant in fresh pasture and flaxseed.

Research in both equine and other mammalian models has shown that omega-3 fatty acids can:

• Support normal inflammatory responses
• Contribute to skin barrier function
• Help maintain skin hydration and elasticity
• Play a role in overall skin and coat condition

While omega-3s are not a replacement for external fly control, they can support the underlying systems that influence how the skin responds to irritation. Because let’s face it…you can never eliminate 100% of the bugs.

Why This Matters More After Winter

By spring, many horses have gone months without access to fresh pasture, one of their richest natural sources of omega-3 fatty acids.

Winter diets, which rely heavily on hay, typically provide lower levels of omega-3s due to the drying and storage process. At the same time, some feeds contribute higher levels of omega-6 fatty acids, which can shift overall fatty acid balance. While both types of omegas are needed by your horse, the ratio of omega-3 to omega-6 is critical to cellular health. Many believe that horses should ingest a ratio most similar to fresh grasses, which would be around 4:1 (Omega-3 to Omega-6).

As pasture returns, omega-3 intake begins to increase again for those who have access to grazing. But many horses lack suitable pasture, or are unable to utilize fresh grasses due to metabolic challenges.

Supporting Skin Health During Bug Season

Preparing for bug season isn’t about a single solution. It’s about combining:

• External protection (fly gear, traps and management practices)
• Environmental awareness
• Consistent nutritional support

Providing a source of omega-3 fatty acids, such as flax, can help support skin health as part of a broader approach.

Flax offers a fatty acid profile that closely resembles what horses would naturally consume on pasture, making it a practical option for maintaining balance during seasonal transitions. The Omega-3 and Omega-6 levels in flax seed run at least 4:1, often even higher. Choosing a flax supplement that delivers the highest levels of omega-3 will have the best results, which is why Omega Horseshine utilizes only the best quality flax available.

A Balanced Approach to Spring Challenges

Every horse responds differently to insects. Some show minimal irritation, while others are more sensitive to bites and environmental changes.

While no nutritional approach can eliminate insect exposure, supporting the skin and underlying inflammatory balance can help horses better navigate the season. As spring progresses, paying attention to both external management and internal support can make a meaningful difference in overall comfort.

Bug season is an inevitable part of spring, but discomfort doesn’t have to be. By supporting your horse’s skin health from the inside out, you can help them stay more comfortable as the environment shifts.