Why the right food is the key to healthy skin and a shiny coat

Perhaps you've already heard it: "Over 80% of skin and coat problems in dogs come from their food!"
Whether this number is actually correct is debatable – but one thing is certain: nutrition plays a central role when it comes to your dog's skin and coat health.
Incorrect composition, intolerances or allergies can quickly lead to itching, dandruff, dull fur or bald patches.

In this article you will learn why food is so important , which nutrients your dog really needs for skin and coat , what the causes are – and how you can use nutrition specifically as part of a solution.

Why nutrition is so important

The skin in dogs (as in humans) is a true all-rounder: it protects, regulates temperature and moisture and is part of the immune system.
The coat, in turn, shows at a glance how your dog is doing – it is its visible health barometer.

If the food lacks essential building blocks, the skin cannot regenerate properly – and this is quickly visible.

Typical correlations:

• Too little high-quality protein → skin and hair cells cannot form properly.
  (By the way: skin and fur account for up to 30% of the daily protein requirement!)
• A lack of fatty acids (Omega-6 and Omega-3) → The skin barrier weakens, inflammation increases.
• Deficiency in vitamins and trace elements (e.g. zinc, biotin, vitamin A) → impaired cell division and slow fur growth.
• Food allergies or intolerances → The immune system overreacts, the skin becomes inflamed.
• Gut health → The so-called “gut-skin axis” effect : A healthy gut can have a positive influence on the skin.

It is therefore no wonder that a change in diet can work wonders for many dogs with skin or coat problems.

Typical causes – diet is often an important part of it.

Skin problems are not always solely caused by diet. Often, several factors are at play:

Often, the food is an aggravating factor – for example, when a slight nutrient deficiency coincides with an already sensitive skin barrier.

The most important nutrients for healthy skin & shiny coat

If you want to provide targeted support through food, pay attention to these nutrient groups:

🥩 High-quality protein

Skin and fur consist primarily of protein. A lack of protein leads to dull and brittle fur. Look for good, clearly labeled animal protein sources.

🐟 Essential fatty acids

• Omega-6 (e.g., linoleic acid) strengthens the skin barrier.
• Omega-3 (EPA, DHA) has an anti-inflammatory effect – ideal for itchy or irritated skin.

🥕 Vitamins & Antioxidants

• Vitamin A : supports cell division and regeneration.
• Vitamin E : protects against oxidative stress.
• Biotin and B vitamins : important for the metabolism of skin and hair.

⚙️ Trace elements & minerals

• Zinc : promotes cell growth and healthy skin.
• Copper, selenium : important for coat structure and pigmentation.

🌿 Good digestibility

Even the best food won't help if your dog can't digest it properly. Quality is therefore crucial.

🦠 Gut health

A healthy gut flora supports the immune system – and that in turn supports the skin.

What you can do specifically

Here are a few practical tips on how you can take immediate action:

1. Check feed quality
   → Look for a “complete and balanced” complete feed with high-quality ingredients.
2. Choose special food for skin and coat
   → There are pet food varieties with extra Omega-3/-6, zinc and biotin – after consulting a veterinarian or nutritionist.
3. Elimination diet for suspected allergy
   → An elimination diet can help with severe itching or recurring skin problems.
4. Optimize care & environment
   → Don't bathe too often, use mild shampoo, prevent parasites, reduce stress.
5. Be patient
   → Skin and coat need time to regenerate – initial results often appear after several weeks.
6. Do not overdose on nutrients
   → “More is not better” applies here. Excessive vitamin or fatty acid intake can be harmful.

Conclusion: Healthy skin starts in the food bowl 🐾

Even if the famous "80%" is somewhat exaggerated – one thing is certain:

Nutrition is one of the most important keys to beautiful skin and a shiny coat. Studies show that food quality, nutrient balance, and digestibility play crucial roles.

👉 So if you want your dog to go through life vital, healthy and with a shiny coat, start with its diet – it is the basis for everything else.

Sources:

• Watson TD: Diet and skin diseases in dogs and cats. J Nutr. 1998 Dec;128(12 Suppl):2783S-2789S. doi:10.1093/jn/128.12.2783S.
• Kirby NA: Dietary fats and the skin and coat of dogs. J Am Vet Med Assoc. 2007;230(11):1641-1647.
• Grant C., Hunter T., Ward E.: The Importance of Your Pet's Skin and Coat and the Role of Diet. VCA Hospitals website.
• Wooten S., DVM: The Impact of Nutrition on Dog Skin Conditions. PetMD, September 12, 2025.
• Danks L.: 'The skin as a mirror of health' … Veterinary Practice magazine, 1 Sept 2016.
• Vester BM: The importance of nutrition in coat quality and skin health in dogs and cats. 2006.
• Makraki E.: The Gut-Skin Connection in Dogs: How Diet Affects Your Dog's Coat and Health. CaniNectar Blog, July 7, 2025.