When Dandruff Isn’t Just Dry Skin

Understanding greasy dandruff and flaky skin in horses...

If you have ever brushed your horse’s mane or tail and found white flakes everywhere, you are not alone. Dandruff and flaky skin are incredibly common in horses, especially during winter and seasonal changes.

But not all dandruff is the same. Some horses struggle with dry, dusty flakes caused by winter weather and sensitive skin. Others develop larger, greasier flakes that cling to the hair and sit close to the skin — especially around the mane and tail base.

The difference matters, because skin that is dry and sensitive often needs something very different from skin that feels oily, irritated or weighed down by build-up.

Different types of dandruff in horses

Dry dandruff is the classic fine white flaking many horses get during winter. The skin may feel dry, tight or sensitive, and the flakes often brush away easily, leaving dust across your grooming kit and jacket sleeves. This can happen due to cold weather, dry air, frequent washing or harsh shampoos

Greasy dandruff

Greasy dandruff tends to look different. The flakes are often larger, slightly yellow or greyish, and may stick to the hair instead of falling away easily. The skin can feel oily or waxy, almost as if the coat cannot properly breathe beneath the build-up.

This type of dandruff is often linked to excess oil production, sweat and winter rugs, build-up from products or changes in the skin microbiome. This is the kind of flaky, slightly greasy skin we often notice around the tail base and mane during winter, when heavy coats, rugs and damp weather start building up over time.

Itching, mites and irritation

In some horses, flaky skin can also appear alongside feather mites, sweet itch or thickened skin. In these cases, the dandruff is often a symptom of a larger skin issue rather than simple dryness.

The problem with treating all dandruff the same way

One of the biggest mistakes we see is treating every flaky horse as if the skin is simply “too dry.” Sometimes that is true. But greasy, irritated skin often reacts poorly to heavy oils and thick coatings. In some horses, this can leave the skin feeling even more congested and uncomfortable over time.

Instead, the goal is often to gently cleanse the skin, loosen dead skin and build-up, support healthy, resilient skin and restore balance without stripping the coat completely

That idea became the starting point for Scratch That.

Why we created Scratch That

Scratch That was developed for horses struggling with greasy flakes, itchy skin, tail and mane build-up and irritation-prone skin.

Instead of creating an aggressive “medicated” wash, we wanted something gentle enough for irritated skin. In Scratch That rhassoul clay helps absorb excess oil and build-up, while colloidal oatmeal and panthenol were chosen to support skin that feels irritated or unsettled during the colder months. The Wash bar gently lifts excess oil, dead skin and dirt without leaving the skin feeling harsh or stripped afterwards. 
Scratch That balm helps calm, protect and support irritated skin after cleansing, while creating a breathable barrier that helps the skin stay comfortable as it recovers.

Because healthy skin is rarely about attacking the problem harder. Very often, it is about helping the skin return to balance.

Simple ways to support flaky or irritated horse skin

Avoid over-washing

Too much washing can sometimes worsen flaky skin, especially with strong shampoos that strip the coat completely.

Pay attention to greasy build-up

If the skin feels waxy, sticky or oily rather than dry, heavy oil-based products may not always help.

Keep rugs and skin dry

Warm, damp environments can aggravate skin imbalance and irritation, particularly during long wet winters when coats and rugs rarely seem fully dry.

Be gentle when grooming

Aggressive scratching and hard brushing can damage already irritated skin. Sometimes the skin needs calm consistency more than stronger products.

Look at the whole horse

Diet, stress, parasites, seasonal changes and overall health can all affect skin condition. Skin rarely exists in isolation.

When to contact your vet

Mild dandruff is common in horses and is often manageable with gentle skin care and good stable management.

However, you should always contact your vet if your horse develops:

• severe itching
• open sores
• hair loss
• bleeding skin
• strong smell
• swelling or heat
• thick crusts or infection
• worsening symptoms despite care

Skin problems can sometimes be linked to parasites, allergies, infections or underlying medical conditions that require veterinary treatment.

Healthy skin starts with balance

In our experience, many horses do not need harsher products. They need calmer routines, gentler cleansing and skin care that respects the skin instead of constantly fighting against it.

Because healthy skin grows healthy coats.