There isn’t one miracle product, as horses have different types of skin and different types of dermatitis. First let’s take a look at the type of skin, which is easier to determine.
What kind of skin does my horse have ? Thin or tick ?

Finding out couldn’t be easier: pinch a bit of the skin on your horse’s neck between thumb and forefinger. If you have picked up a narrow fold of skin (as in the left-hand photo), then your horse has thin skin. If, on the other hand, you have a wider fold of skin (as in the right-hand photo), the epidermis is more likely to be thick..
Of course, when a horse has dermatitis, we tend to focus on the irritated, lichenified and therefore thickened skin, but that’s just the result of all the scratching and doesn’t represent the true identity of the epidermis.
Depending on your horse’s skin-type, choose the appropriate Derfen™ lotion
Thick skin = Derfen™ Clear
Derfen™ Clear is perfect for thick skin. As it is highly enriched with essential fatty acids, it substantially hydrates cracked skin whilst instantly relieving itching on the mane and tail. As it does not contain water, it stays on the skin and is only removed by sweat, so it needs to be applied just once or twice a week.
Thin skin = Derfen™ Original
Derfen™ ORIGINAL, the very first of the Derfen™ range, is the perfect lotion for thin-skinned horses, such as Andalusians, Friesians, etc. It comprises ultra-soothing dry oils that don’t clog up thin skin, which, by its very nature, cannot retain conventional oils for very long. As it does not contain water, it only needs applying once or twice a week..
Not sure which to choose?
Our clients often use “Derfly™” lotion in combination with one of the other Derfen™ lotions (although it can also be used alone), to hydrate skin that has become dry through scratching whilst warding off insects at the same time. Significantly reduces itching. ALL SKIN TYPES
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The information provided does not in any circumstances replace the advice of your veterinarian. It is the fruit of over 12 years’ experience and analysis of equine skin problems.