Itching? Dermatitis? Give your horse Picorex + Derfen
Friday 27 June 2025
Dermatological problems in horses are, unfortunately, increasingly common. Because high temperatures are present for more of the year, the season when summer dermatitis affects sensitive horses is lengthening. Increasingly, we can observe abnormalities in the dermis almost all year round, so it is very important to focus on prevention and ongoing skin care.

If your horse suffered equine summer dermatitis last summer, it is very likely that it will happen again this year, since this problem will surely accompany him for the rest of his life. This type of dermatitis is caused by an exaggerated reaction or hypersensitivity on the part of the horse's body to insect bites. The mosquito (Culicoides) is the most common cause of this type of allergy, since the body reacts to the saliva they inoculate when biting, producing swelling and itching in the area.
All animals have antibodies against Culicoides, both allergic and non-allergic animals. In sensitive horses, the immune system overacts, releasing histamine and other substances into the blood circulation, causing symptoms and serious problems to be treated.
Once a horse presents allergy symptoms, it will be allergic for life, and may worsen with age.
All animals have antibodies against Culicoides, both allergic and non-allergic animals. In sensitive horses, the immune system overacts, releasing histamine and other substances into the blood circulation, causing symptoms and serious problems to be treated.
Once a horse presents allergy symptoms, it will be allergic for life, and may worsen with age.
THEN, WHAT CAN WE DO?
There are factors that favor the appearance of allergic dermatitis. The key is to keep our horses' immune system in an optimal state to deal with the toxins that cause dermatitis, whether from the environment, food or mosquito bites.

PICOREX is specially formulated to help your skin cope with seasonal threats while preserving its health. It contains carefully selected antioxidants, herbs, and nutrients that help combat itching and promote strong, healthy skin from within.
Itching should also be treated topically with Derfen. If the itching and scratching are not relieved, the horse's discomfort will increase and significant sores may develop in the affected areas.

DERFEN instantly stops itching, while nourishing and soothing the skin. It helps hair grow back and regain its original appearance.
DERFEN is available in lotion (mane and tail) and cream (more sensitive or difficult to apply areas).
DERFEN CLEAR: for more sensitive skin, gray horses...
DERFEN ORIGINAL: for horses with thick and resistant skin, horses not stabled...
It is very important that the skin is well hydrated so that it can recover properly.
> Find out here which DERFEN is right for your horse <
It's also very important to use repellents to prevent mosquito bites, especially during peak hours. If your horse has sensitive skin, it's advisable to avoid chemical repellents, which can aggravate its condition. The effects of dermatitis can also be minimized by strengthening the skin with omega oils or other supplements, as well as using a soothing dermatological shampoo.
INSECTS
DERFLY

DERFLY is the ideal repellent for horses with dermatitis problems.
It is a 100% natural repellent, effective against all types and insects, acting in two ways:
1. Masks the horse's odor by providing a non-attractive odor to the insect
2. Coats the hair with a micro wax that does not allow the insect to remain in the animal's hair or bite
KNOBLETTEN (GARLIC PELLETS)
Garlic is known for its many beneficial properties for horses:
- Once ingested, the skin secretes garlic essential oils, which have been shown to be effective against insects.
- It stimulates digestion and metabolism, promoting the development of the natural bacterial flora in the digestive tract, essential for a healthy and strong immune system.
Equi 2000 KNOBLETTEN with garlic, wild garlic, flax seeds, vitamin B, and herbs protects horses from insect bites. In addition, by stimulating digestion and purifying the metabolism, the horse's well-being and performance are greatly improved.
SHAMPOO
The horse's intense sweat produces a characteristic odor that is very attractive to mosquitoes. By cleaning the horse we will often reduce this odor that is so irresistible to Culicoides. We recommend washing the horse with mild shampoos that are respectful of its skin.
DERFEN SHAMPOO is an extremely gentle dermatological shampoo to soothe, purify and restore the physiological balance of damaged and itchy skin.
DERMIS / SKIN
Oils rich in omega 3, 6, and 9 can be very beneficial for horses with skin problems. They help maintain skin moisture and promote a shiny, healthy coat. They strengthen the skin's protective barrier, helping to prevent dehydration and the penetration of irritants. They also have anti-inflammatory properties that can help reduce inflammation associated with skin problems.
OMEGA OIL

OMEGA OIL offers all the benefits of Omega 3, 6 and 9 oils in optimal proportions for horses.
OMEGA OIL offers all the benefits of Omega 3, 6 and 9 oils in optimal proportions for horses.
After summer or the most intense itchy period, we can help the skin recover with a specific supplement.
DERMATIN

DERMATIN is a nutritional supplement formulated with MSM, natural antioxidants, vitamin C, zinc and plant extracts, designed to supplement the horse's diet during periods when the skin requires specific nutritional support.

DERMATIN is a nutritional supplement formulated with MSM, natural antioxidants, vitamin C, zinc and plant extracts, designed to supplement the horse's diet during periods when the skin requires specific nutritional support.

