After two weeks the missing patches of fur were replaced by new, shiny, soft fur - and he loves the taste!
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Skin & coat
Cats
$32.90
A soft, shiny coat starts with daily skin nutrition.
STEPHANIE HEINZ (VETERINARIAN)
Our Bengal's fur is already growing back after two weeks. I tried a powder that did nothing - this actually works.
My cat's extensive dandruff is down to almost none and her fur is silky now.
All my cats run up for it and their coats look super shiny. So happy with it.
My British shorthair's coat got really fluffy and shiny - the ingredients look well selected.
Salmon Oil
Rich in omega-3 EPA & DHA, salmon oil is our headline coat conditioner — the marine omega-3s that support a healthy skin barrier, a soft, glossy coat and a normal inflammatory response in the skin.
Marine Microalgae Oil
The ocean's original omega-3 source — it's what fish eat to become rich in DHA. This algae oil delivers highly absorbable DHA — the same omega-3 a healthy skin barrier and coat rely on.
Collagen
Collagen is the main structural protein of skin. Supplying its building blocks helps support skin's natural suppleness and hydration — keeping the skin beneath the coat healthy and comfortable.
Biotin
A B-vitamin cofactor your cat's body uses to build the fatty acids and proteins of healthy skin and strong hair — quietly supporting a soft, shiny coat from the follicle up.
Zinc
An essential mineral for skin health: zinc supports the skin barrier, normal skin renewal and a healthy, well-conditioned coat, helping keep skin comfortable and flake-free.
L-Cystine
Hair is built from keratin, and L-cystine is the sulfur amino acid that forms keratin's strengthening bonds — supplying the building blocks of a strong, healthy coat.
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From our veterinarian
A vet's take on feline skin & coat
A cat's coat is a window into her skin health — and that's where good nutrition does its quiet, daily work.
When owners ask me about a dull coat, dandruff, or a cat who's suddenly shedding all over the house, the conversation almost always comes back to the skin barrier. The coat we see and touch is really a reflection of the skin underneath — and that skin is built and maintained from the nutrients in the diet.
This is where the long-chain omega-3s, EPA and DHA, earn their reputation. They're incorporated into the skin's own cell membranes, where they support the skin barrier and a normal, balanced inflammatory response — the foundation of skin that holds moisture well and grows a glossy, well-conditioned coat. Sourcing them from both salmon oil and marine microalgae is a smart, modern way to deliver them.
Then there are the builders. Zinc is essential for normal skin renewal and a healthy barrier; L-cystine is the sulfur amino acid that forms the strengthening bonds in keratin, the protein hair is made of; biotin is the cofactor the body uses to build the fats and proteins of skin and coat; and collagen supplies the structural building blocks of the skin itself. Together they support strong hair and healthy skin from the follicle up.
What I appreciate most as a practical matter is the format. Skin and coat support has to be given every day for weeks to show — the coat literally has to grow out — and that only works if the cat actually eats it. A creamy, real-tuna lickable that most cats look forward to is far easier to keep up than a drippy oil or a pill, and consistency is what makes the difference.
For a daily, food-based way to support healthy skin, a soft, shiny coat and normal shedding — in a form picky cats will happily eat — I'm genuinely happy to recommend ivvi Skin & Coat.
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Stephanie Heinz · Veterinarian
1. Omega-3 from marine algae and feline skin
Watson et al., 2025 – In a six-month randomized controlled study, a diet elevated in EPA & DHA from marine algal oil improved cats' skin and itch scores and reduced their need for medication — real feline evidence that omega-3-rich nutrition supports skin and coat.
2. Omega-3s visibly improve coat quality
Combarros et al., 2020 – In a randomized, double-blind, placebo-controlled trial, dogs with poor-quality coats given daily EPA & DHA showed significantly better coat scores from day 60 — and the coats slipped back toward baseline when the omega-3s were withdrawn.
3. Algae oil delivers absorbable omega-3 to cats
Motsinger et al., 2025 – In cats, marine algal oil raised blood DHA just as effectively as fish oil, confirming algae as a bioavailable, sustainable source of the omega-3s that skin and coat rely on.
4. Zinc supports coat gloss and the skin barrier
Marsh et al., 2000 – In a controlled trial, dogs already on a complete diet had significantly glossier coats, less scale and a stronger skin barrier when supplemented with zinc — showing zinc supports coat quality even in well-fed animals.
5. Collagen supports skin hydration and suppleness
Pu et al., 2023 (meta-analysis of 26 trials) – Pooling 1,721 participants, oral collagen significantly improved skin hydration and elasticity versus placebo, with bigger gains after eight or more weeks — the mechanism behind a well-hydrated, supple skin foundation.
6. Biotin and the building blocks of a healthy coat
Frigg et al., 1989 – In a large open-label field study, dogs with dull coats, brittle hair and scaling improved on daily biotin — consistent with biotin's role as the B-vitamin cofactor the body uses to build the fatty acids and proteins of healthy skin and strong hair.
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Frequently Asked Questions
Everything you need to know about the ingredients, quality, and care behind our award-winning treats.
How much should I give my cat each day?
Just one sachet a day — that's the full daily serving. Each box has 30 sachets for a one-month supply. You can offer it straight from the sachet as a lickable treat or spoon it onto her food; most cats look forward to it once it's part of the daily routine.
How soon will I see a softer, shinier coat?
Skin and coat support is gradual, not instant — the coat literally has to grow out. The omega-3s and coat-building nutrients work over time, so we recommend giving it daily and being patient: many owners notice softer fur and a bit more shine over a few weeks, with shedding and flakes easing as the new coat comes in. Give it a fair, steady run of several weeks before you judge it.
Will it really help with shedding and hairballs?
By supporting a healthier skin barrier and a better-conditioned coat, the omega-3s, zinc and keratin-building nutrients help support normal shedding — and many owners find that means less loose fur around the house and fewer hairballs over time. It's daily nutritional support, not an overnight fix, so consistency over a few weeks is what makes the difference.
What if my cat is picky and won't eat it?
This is where the creamy, real-tuna formula shines — most fussy cats happily lick it right up, and it's far easier than fighting to dose a drippy salmon-oil bottle. That said, we'll be honest: no single flavor wins over every cat. If yours turns up her nose, our 90-day money-back guarantee means you can try it completely risk-free.
Is it safe? Are there any cautions?
It's a clean, vet-formulated daily supplement, but introduce it gradually so your cat's stomach can adjust — rich fish oils can cause soft stool if started too fast, especially in sensitive cats. Always check with your veterinarian first if she's pregnant, nursing, or on any medication, and see your vet for any sudden, severe or worsening skin or coat problem, since that can signal an underlying issue worth checking.
Why this instead of a cheap bottle of salmon oil?
Omega-3s are the workhorse, and we use two marine sources — salmon oil and marine microalgae oil — but a glossy coat needs more than oil. We pair those omega-3s with the actual coat and skin builders: collagen, biotin, L-cystine and zinc, all in one mess-free, lickable daily treat your cat actually wants, instead of an oil you have to fight to dose.
What's your return policy?
Every order is backed by our 90-day money-back guarantee. Give it an honest try, and if you or your cat aren't happy for any reason, just reach out and we'll make it right — no hassle. That way the only thing you have to lose is the fur on your couch.