Dry, Flaky Skin and Dandruff in Dogs: How to Tell What You're Looking At

Have you started noticing white flakes on the dark sofa or in the brush after a grooming session? Is it making you wonder whether your dog's dry skin is something to worry about? You're not the only one, and the good news is that once you know what to look for, it's much easier to tell which one you're dealing with.

Most dry, flaky skin in dogs comes from one of four things:

• Dry winter air from indoor heating
• Bathing too often or with the wrong shampoo
• Their diet lacks the fats their skin is built from
• An underlying problem such as mites or allergies

Occasional flaking is common and usually harmless. However, if your dog also has redness, scabs, hair loss, or odour, or seems unwell, it's time to call the vet.

In this blog, you'll learn how to tell dry skin from dandruff and other skin issues. We'll also cover the likely causes, how diet affects your dog's skin barrier, and simple changes you can make at home this winter.

Telling the Difference

Flakes are a sign, not a diagnosis. What they look like, where they appear on the body, and what comes with them can point you to the cause.

Dry, Flaky Skin

If your dog has dry skin, you'll see small, fine, white flakes, a bit like powder or table salt. You'll usually see the most flakes along their back and sides, and it may start or get worse once you turn on the heating for the season.

Part your dog's coat and take a look. The skin underneath should look normal, without redness, bumps or any unusual smell. Your dog's coat may feel a little dry or coarse, and you might catch them scratching now and then. Otherwise, they're their usual happy self.

Dandruff and Seborrhea

"Dandruff" is the everyday word for flaking. Vets use the term seborrhea when the skin is producing scale abnormally, and it comes in two forms.

• Dry seborrhea looks like dry flaky skin, only heavier and more persistent. Flakes keep coming no matter how often you brush.
• Oily seborrhea looks different. The flakes are larger, yellowish and greasy, and they cling to the hair. The coat feels oily, and your dog may have a distinct, unpleasant odour, especially around the ears, elbows, belly, and skin folds.

Seborrhea affects a few breeds more often, including Cocker Spaniels, West Highland White Terriers, and Basset Hounds. It usually shows up when they're young.

You should know that seborrhea is more often than not secondary, meaning the scaling signals something else going on, such as allergies, parasites or a hormonal condition. That's why, if your dog has greasy flakes, you should book a vet appointment instead of just trying a new shampoo.

When It's Something Else

Flakes may point to something more if your dog also has any of these:

• Redness, a rash, or skin that looks inflamed
• Scabs, crusts, bumps or pimples
• Patches of hair loss, especially round ones
• A strong or sour smell from the skin or ears
• Flakes that seem to move
• A dog who is low on energy, gaining weight, drinking more, or off their food

When to Call the Vet

If you notice any of the signs above, call your vet early. You may also want to call if:

• Your dog's flaking hasn't improved after three or four weeks of the home changes we mention later in the article
• The skin issues appeared suddenly in a puppy or senior dog
• Other pets or people in your home start getting itchy spots

A vet can usually narrow things down quickly with a flea comb, a tape test or a skin scraping, and bloodwork if a hormonal cause is possible. These are simple tests, and they often settle in one visit what could take months of guessing at home.

What Causes Dry, Flaky Skin in Dogs

Winter Heat and Low Humidity

Cold outdoor air is already dry, and indoor heating dries it out even more. In a heated house in January, indoor humidity can drop well below the 40 to 50% that's comfortable for skin. The outer layer of your dog's skin loses water to that dry air faster than it can be replaced.

If this sounds familiar, it's happening to your hands and lips too.

The pattern you want to look for: flakes that appear around November or December and ease off in spring. If your dog sleeps near a heat vent, radiator or fireplace, they often have it worst.

Over-Bathing and the Wrong Shampoo

Healthy skin has a thin film of natural oil that helps retain moisture. If you give your dog baths too often, it'll strip that oil away.

Human shampoo is made for human skin, which is more acidic than a dog's, and dish soap or strong flea shampoos used as a routine wash are harsher still. And shampoo that's not fully rinsed out can leave skin itchy and flaky on its own.

What you should watch for: flaking that appears a day or two after your dog's bath.

Diet and Dietary Fat

Skin is partly built from fat, and when a diet is short on it, the skin and coat are often the first places this deficiency shows. You see a dull, dry coat and fine scaling.

This is more likely with weight-management or low-fat food, home-cooked diets without a planned fat source, and food that has sat open for a long time.

Parasites

Fleas and several kinds of mites can all cause scaling. One deserves special mention because it's so often missed: Cheyletiella, a mite nicknamed "walking dandruff" because the flakes on a dog's back can appear to move.

It causes heavy scaling along the back and spine. Some dogs are intensely itchy, while others barely notice. It's most common in puppies, newly adopted dogs and homes with several pets, and it spreads easily between dogs, cats and rabbits. It can also cause itchy red bumps on people.

Because it looks so much like ordinary dry skin, people often treat it as a grooming problem for months.

It may be Cheyletiella if you find flaking is concentrated along the back, a new dog or puppy has joined the household, or you have developed itchy spots yourself. A vet can usually find it with a flea comb, tape test or skin scraping, and will typically want to treat every pet in the home.

Underlying Conditions

Sometimes flaky skin is one sign of a bigger picture.

• Allergies: Atopic dermatitis, an allergy to things in the environment, affects roughly 10 to 15% of dogs and is often seasonal. Food allergies are another possibility. Allergic dogs often show flaking alongside itching, ear trouble, and licking or chewing at their paws.
• Hormonal conditions: An underactive thyroid can cause a dry, dull coat, thinning hair, weight gain and low energy. Cushing's disease can cause thin skin, hair loss and increased thirst.
• Fungal infection: Ringworm can cause round, scaly patches of hair loss, and it can pass to people.

None of these are things you want to sort out at home alone. If any of them sound familiar, your vet is the right first step.

Diet and the Skin Barrier

Most advice on dry skin stops at "add omega-3s." That leaves out why fat matters, which fats, how much, and how long to wait. We're here to give you the fuller picture.

What the Skin Barrier Is

The outermost layer of skin works like a brick wall. Flattened skin cells are the bricks. A blend of fats, mainly ceramides, cholesterol and fatty acids, is the mortar between them.

That mortar is what keeps water in and irritants out. When it's thin or patchy, water escapes from the skin, the surface dries out, and cells shed in clumps big enough to see. Those clumps are the flakes you may be finding around your house.

Why Dietary Fat Matters

Dogs can't make two fatty acids on their own, so they must get them from food. One is linoleic acid, an omega-6. The other is alpha-linolenic acid, or ALA, an omega-3.

Linoleic acid matters most for the barrier, because the body builds it directly into the ceramides that hold the mortar together. A dull, dry, scaly coat is one of the first signs vets associate with a diet short on it. Omega-3s matter too.

Both families are essential, and what the skin needs is a good balance of the two, not more of one at the expense of the other.

What Most Commercial Food Supplies

Any dog food labelled complete and balanced has to meet minimum levels of fat and linoleic acid. That minimum is a baseline, though, not a target. And a few everyday factors can mean your dog ends up getting only the bare minimum, or even less:

• Weight-management and "light" recipes cut fat to cut calories.
• How you store it matters. Fats are the most fragile part of a bag of kibble. Once it's open, air, heat, and light break them down over the next few weeks. Keep food in its original bag, sealed, somewhere cool, and try to finish it within about six weeks of opening.
• Home-cooked diets often fall short on fat unless a veterinary nutritionist has balanced them.

If your dog eats a fresh, complete food and the coat is otherwise glossy, diet may not be your answer. Winter air or your bath routine is the more likely culprit.

The Sources of Linoleic Acid and ALA

Fish oil supplies EPA and DHA, the long-chain omega-3s, directly. It's the most studied option, and if you're after EPA and DHA, fish or algae oil is the way to get them. However, these options supply little omega-6, and they oxidize quickly once opened.

Plant oils such as flax, hemp and camelina supply ALA and linoleic acid.

An important note: Dogs convert ALA into EPA and DHA only to a very limited degree, and controlled trials show ALA-only plant oils do not raise EPA or DHA. So plant oil isn't a substitute for fish oil if that's your goal. Plant oils earn their place for skin by supplying both essential fatty acids together.

Camelina oil is one of these plant oils, and it brings both essential fats together in one bottle. Smart Earth's label lists 36% omega-3, 20% omega-6, and 34% omega-9, a 1.8:1 ratio. It's also naturally rich in vitamin E, with roughly 150 IU per 100 mL, which helps keep it more stable than flax oil.

Still deciding between camelina and fish oil? Here's how camelina and fish oil compare.

How Much and How Long

For camelina oil, feed 1 tsp (5 mL) per 25 lb of body weight once daily, mixed into food. For fish oil, follow your vet or the label, since it's dosed by its EPA and DHA content.

Any added oil adds calories, roughly 40 per teaspoon. For small dogs or dogs watching their weight, trim their food slightly to allow for it.

Then be patient. A dog's outer skin layer renews about every three weeks, and the new coat grows more slowly. Give any diet change six to eight weeks before you judge it. And remember what diet can't do: it won't change the air in your house, your bath routine, mites or allergies.

What Else Helps

For ordinary winter dryness, the changes that make the most difference cost little and have nothing to do with what goes in the bowl.

Add Moisture to the Air

Run a humidifier in your dog's sleeping room, and aim for 40 to 50% humidity. A low-cost hygrometer will tell you where you are. Many heated homes sit far lower in winter than people expect. If your dog's bed is beside a heat vent, radiator or fireplace, move it a few feet away.

Bathe Less Often

Most dogs with dry skin do best with a bath no more than about once a month, unless your vet has prescribed a medicated routine. In between, rinse or wipe muddy legs and paws with plain water rather than giving your pup a full bath.

Choose a Gentle Shampoo

When you do bathe your dog, use a shampoo that's specifically made for canines. Look for a soap-free, fragrance-free formula; colloidal oatmeal is a common gentle choice. Use lukewarm water rather than hot, and rinse until the water runs clear, then rinse again.

Skip human shampoo and dish soap, and save flea or medicated shampoos for when your vet recommends them.

Brush Regularly

Brushing a few times a week spreads the skin's natural oils along the hair, lifts loose flakes and dead coat, and lets you regularly check the skin underneath. A rubber curry brush or bristle brush suits short coats, while a slicker brush suits longer ones. If brushing turns up heavy shedding or a coat that has lost its shine, that's worth looking into on its own.

Build a Winter Grooming Routine

• Towel off snow, slush and road salt from legs and belly after winter walks.
• Dry your dog thoroughly after any bath or wet walk, especially in thick coats.
• Keep fresh water available at all times.
• Jot down when the flakes appear, where on the body, and what changed beforehand. If you do end up at the vet, those notes are genuinely useful.

Helping Your Dog Feel Comfortable with Healthier Skin and Coat

A few flakes on the sofa usually aren't cause for worry, but they're always worth paying attention to. Start with the easy wins: add some moisture to the air, ease up on baths, and keep an eye out for anything that points to a vet visit.

Once those are covered, diet is the next piece of the puzzle. If you'd like to add a plant-based source of both essential fats to your dog's bowl, explore Smart Earth Camelina Oil for dogs and small pets.

Frequently Asked Questions

Why does my dog have flaky skin?

The most common reasons are dry indoor air in winter, bathing too often or with the wrong shampoo, and a diet that's short on fat. Mites such as Cheyletiella, allergies and hormonal conditions are less common but important to know so you can watch for the right symptoms. If the flakes come with redness, scabs, hair loss or odour, see your vet.

Is dog dandruff normal?

A few fine white flakes, especially in winter, are common and usually harmless. Heavy flaking, greasy yellowish flakes, a bad smell, or flakes that seem to move are not normal and are worth visiting your vet.

What can I put on my dog's dry skin?

Start by changing what you can control: run a humidifier, bathe your dog less often, and use a gentle, soap-free dog shampoo with a thorough rinse. Avoid human lotions and creams, since dogs lick them off. If you want a topical product, ask your vet to recommend one made for dogs.

Does fish oil help dry skin in dogs?

Fish oil provides EPA and DHA, and these fatty acids support the skin barrier and a healthy coat. Plant oils such as camelina supply linoleic acid and ALA instead, but not EPA or DHA. Whichever you choose, give it six to eight weeks before judging the result.

How often should I bathe a dog with dry skin?

For most dogs, bathe them no more than once a month, using a gentle dog shampoo and a thorough rinse. If your vet has prescribed a medicated shampoo, follow their schedule instead.

Why is my dog's skin worse in winter?

Indoor heating dries the air, and dry air pulls moisture from the skin's outer layer faster than the skin can replace it. Dogs who sleep near heat sources often have it worst. A humidifier is usually the single most useful change.

When should I see the vet?

See your vet if flaking comes with redness, scabs, hair loss, odour, constant itching or a change in energy or appetite. Also go if it hasn't improved after three or four weeks of home changes, or if people or other pets in the house get itchy too.

Flaky skin is rarely an emergency, but it's always telling you something. Once you have ruled out the air, the bath routine and the vet-level causes, diet is the piece worth looking at. Check out Smart Earth Camelina Oil if you're at that stage of your skin-and-coat journey.