Updated On April 20th, 2020
Reviewed By Dr. JoAnna Pendergrass
A shiny, glossy coat is beautiful on a dog. What’s not so beautiful is dandruff: white flakes of dead skin cells. Dogs don’t get embarrassed by their dandruff, but it’s not exactly fun for them, either.
Dandruff — typically found on the back, belly, and armpits — frequently indicates an underlying problem.
What Causes Dog Dandruff?
**Environment.** In the winter, temperatures and air moisture levels drop, drying out the skin. Also, [allergens](https://www.petcoach.co/article/food-allergies-vs-environmental-allergies-whats-the-difference/) like dust or pollen, or a drop in indoor humidity (50% humidity is ideal), can cause mild dandruff.
**Grooming.** Dogs naturally groom themselves a bit to keep their coats healthy. However, under- or overgrooming can contribute to dandruff development. Dogs who are ill or are in pain will groom themselves less often. Overgrooming (e.g., an overzealous bathing routine) strips the skin of its natural oils, leaving the skin dry and prone to dandruff.
**Diet.** [Good nutrition](https://www.petcoach.co/article/new-dog-survival-guide-feeding-tips/) is key to optimal skin health. Dogs who become dehydrated can develop dandruff because their skin dries out from a lack of water. Too few healthy fats in the diet (such as omega-3 fatty acids) can lead to dandruff. Also, [food allergies](https://www.petcoach.co/dog/condition/food-allergies/) can make skin flaky.
**External parasites.** [Fleas](https://www.petcoach.co/dog/condition/flea-infestation-1/) and [lice](https://www.petcoach.co/dog/condition/lice-in-cats-and/) can make skin itchy and flaky. The [*Cheyletiella* mite](https://www.petcoach.co/dog/condition/cheyletiella-in-rabbits-cats-and/) doesn’t cause dandruff, but is nicknamed “walking dandruff” because it resembles flaking skin as it marches down a dog’s back.
**Skin infections.** [Bacterial](https://www.petcoach.co/dog/condition/staphylococcal-pyoderma-1/) and [fungal (yeast)](https://www.petcoach.co/dog/condition/malassezia-dermatitis-in-cats-and/) infections commonly cause dandruff. **Seborrhea.** [Seborrhea](https://www.petcoach.co/dog/condition/seborrhea/) in dogs makes the skin flaky, scaly, and greasy. It is caused by overactive skin oil glands. The yeast *Malassezia* is a common cause of canine seborrhea.
**Systemic disease.** Diseases characterized by hormone disruptions, such as [Cushing’s disease](https://www.petcoach.co/dog/condition/cushing-s-disease/) and [hypothyroidism](https://www.petcoach.co/dog/condition/hypothyroidism), can cause dandruff. Autoimmune diseases, in which the body attacks itself, can also lead to dandruff.
**Genetics.** Unfortunately, some dog breeds, like Cocker Spaniels and Golden Retrievers, are prone to developing dandruff.
Treating Dog Dandruff
For many dogs, dandruff is mild and can be easily treated at home without veterinary care. If you are unsure about at-home treatment, schedule an appointment with your veterinarian, who can help you determine what’s causing the dandruff and recommend the ideal course of action.
Unless the dandruff is due to genetics, treating it depends on the underlying cause. For example, if the cause is low humidity, consider purchasing a humidifier for your home. For dietary causes, make sure that your dog has free access to fresh water and his food is full of healthy fats; omega-3 supplements can also help. Other underlying causes will have specific treatment plans.
Severe cases of dandruff require veterinary care. For example, underlying diseases like hypothyroidism or Cushing's disease need to be managed with additional medication.
Dandruff Grooming Tips [A proper grooming routine](https://www.petcoach.co/article/bathe-and-brush-pets-the-right-way) can work wonders for eliminating dandruff, regardless of the underlying cause. Bathe your dog once or twice a month and brush daily. A moisturizing dog dandruff shampoo, such as colloidal oatmeal shampoo, is ideal to relieve dry skin on dogs. For seborrhea or mite infestations, a specific veterinarian-prescribed shampoo will be needed. **Never use a human dandruff shampoo on your dog**; the shampoo’s ingredients can harm your dog’s skin.
Brush your dog’s coat in the direction of hair growth. First, wear a rubber nubbed pet grooming glove and rub the skin in a circular motion to loosen up the dead skin. Then, use a brush to remove the dandruff and distribute your dog’s natural skin oils. Adding a bit of coconut oil or olive oil at the end of the grooming routine can be helpful in some cases, despite being a bit messy.
Dog dandruff is unsightly, but is not usually a big problem. With the proper treatment, your dog’s coat will look as good as new!
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