See your vet to find the cause. Itchy skin, hot spots and a dull coat can signal allergies, parasites or other conditions. See your vet to find the cause rather than relying on a supplement alone. This is an independent comparison resource, not veterinary advice.
Our top pick is NAS Omega 3-6-9 Oil, scoring 88/100 for a clean daily omega blend of salmon, evening primrose and flaxseed from our benchmark Australian natural-care brand, with owners consistently happy with the coat shine and skin condition they see. Below you’ll find our top-5 of omega oils and skin/coat formulas, compared on evidence, ingredient quality and value, plus a guide to choosing the right one.
Scored by the PetReviews independent review board
Independent scoring · Updated June 2026 · Not veterinary advice
Scored by our independent review board against our published methodology. Not veterinary advice. Scores are applied with our published methodology. Always confirm suitability and dosing with your vet before starting any supplement.
Our #1 skin & coat pick
NAS Omega 3-6-9 Oil
Best omega oil · $$$
A clean daily omega blend of salmon, evening primrose and flaxseed oils from Natural Animal Solutions, our benchmark Australian natural-care brand. Owners consistently rave about the coat shine and skin condition they see, and that’s exactly why it tops the category.
NAS Omega 3-6-9 Oil
A clean daily blend of salmon, evening primrose and flaxseed, with owners consistently happy with the coat and skin results.
Antinol Rapid
An evidence-backed marine lipid (PCSO-524) with peer-reviewed research behind it for skin and joint comfort.
The Paw Grocer
Single-ingredient, whole-food omega from air-dried sardine and fish toppers, a natural way to add omega-3 at mealtimes.
Rose-Hip Vital Canine
Rosehip-derived natural anti-inflammatory support, for when you’d prefer a plant-based option to fish oils.
PAW by Blackmores
Affordable, easy-to-find, vet-developed fish oil and skin/coat formulas from a well-established Australian brand.
NAS Omega 3-6-9 Oil
Omega-rich diet support that, paired with regular brushing, helps keep the coat glossy and shedding in check.
A clean daily omega blend of salmon, evening primrose and flaxseed from our benchmark Australian natural-care brand, with owners consistently happy with the coat and skin results. Just store it well, because omega oils oxidise once opened, so pop it in the fridge after opening.
A concentrated marine lipid (PCSO-524) with peer-reviewed research behind it, supporting skin and joints alike. It costs more per capsule, but that evidence base puts it among the most credible options in the category.
Single-ingredient, air-dried sardine and fish toppers — a natural, whole-food way to add omega-3 to meals, from a trusted Australian range. A genuine favourite if you’d rather feed real food than reach for a capsule.
We scored every pick on the same evidence, ingredient quality and value methodology, then ranked them best to least complete. The lower-scoring picks are still worth a look, so compare them carefully.
Our top skin and coat pick. A clean daily omega blend of salmon, evening primrose and flaxseed from Natural Animal Solutions, with owners consistently reporting back on the coat shine and skin comfort they see. Store it well, because omega oils oxidise once opened, so keep it in the fridge.
A concentrated marine lipid (PCSO-524) with peer-reviewed research behind it, supporting skin and joints together. It costs more per capsule, but it’s among the most evidence-backed options in the category.
Single-ingredient, air-dried sardine and fish toppers: a natural, whole-food way to add omega-3, from a trusted Australian range. A genuine favourite if you’d rather feed real food than reach for a capsule.
A rosehip-derived supplement with natural anti-inflammatory support that can help skin comfort alongside joints. A plant-based alternative if you’re looking beyond fish oils.
Vet-developed fish oil and skin/coat formulas from an established Australian brand: dependable, easy to find and stocked just about everywhere. The formulas are broader than the purest single-ingredient options, but it’s a sensible, affordable place to start.
Scored by our independent review board against our published methodology. Not veterinary advice. Scores are based on publicly available product information and applied with our published methodology. Always consult your vet before starting a supplement.
Marine omega-3s, EPA and DHA from fish and marine sources, have the strongest evidence for supporting coat quality and skin condition. The benefit hinges on getting the dose right for your dog’s weight and on keeping the oil fresh, since omega oils oxidise once opened. Match the product to your dog’s diet, and pop it in the fridge after opening to protect the potency.
A healthy skin barrier comes down to more than supplements: diet, how often you wash your dog, the shampoo you use and parasite control all play their part. Omega supplements tend to work best alongside a complete, balanced food rather than instead of it. Get the foundations right and a supplement becomes the finishing touch, not the whole answer.
Some signs call for a vet visit rather than another supplement: itching that won’t let up, hot spots, hair loss or red, broken skin. These often point to allergies, fleas or other conditions that omega oils alone won’t resolve. See your vet to find and treat the underlying cause, then use a supplement to support recovery if they suggest it.
We put NAS Omega 3-6-9 Oil at #1 (88/100) for its clean daily omega blend of salmon, evening primrose and flaxseed, with owners consistently happy with the coat shine and skin condition they see. Antinol Rapid leads on clinical evidence, and The Paw Grocer is our pick for a natural whole-food omega topper. The right choice comes down to your dog’s diet, age and skin needs, so check suitability and dosing with your vet before you start.
A dull or dry coat usually picks up with a complete, balanced diet that’s rich in omega-3 fatty acids, backed by regular brushing and sensible washing. Omega oils like NAS Omega 3-6-9 or a vet-developed fish oil can help where the diet falls short, but they work best alongside good nutrition rather than in place of it. A coat that stays dull can also be a sign of something underlying, so it’s worth a vet check to rule out allergies, parasites or other conditions.
Coat and skin changes come on slowly, because the coat grows and renews over weeks, so look for results over roughly 6 to 12 weeks of consistent daily use. Give any supplement a fair, uninterrupted run at the right dose before you judge it. If you see no improvement, or the skin gets worse, stop and speak to your vet rather than just stacking on another product.
The omega-3 fatty acids EPA and DHA in fish oil have a reasonable evidence base for supporting skin condition and coat quality, and some itchy dogs do get more comfortable with consistent supplementation. That said, itching that won’t let up is often driven by allergies, fleas or other conditions that a supplement alone won’t resolve. If your dog keeps scratching, see your vet to find the underlying cause rather than leaning on fish oil by itself.
Omega-3 is generally well tolerated, but more isn’t automatically better — very high doses can lead to loose stools or interact with other parts of your dog’s care, and quality and freshness count just as much as quantity. Follow the product’s feeding guide for your dog’s weight, and store omega oils well, since they oxidise once opened. Because the right dose depends on your dog’s diet, size and health, check with your vet before you bump up any omega supplement.