By Fabian Barcelo, Founder & Veterinary ScientistVet-reviewed
Every cat owner knows the sound. Hairballs are so familiar that most of us treat them as part of owning a cat, but frequent hairballs are actually a message worth reading. They sit at the intersection of two systems, the coat and the gut, and both can be supported. At Innovet, we look at hairballs the way we look at all pet supplements questions: what is normal, what is not, and what genuinely helps.
Key takeaways
- The occasional hairball is normal; frequent hairballs usually mean the cat is swallowing more hair (over-grooming, shedding, coat condition) or moving it through less efficiently (gut motility).
- Regular brushing is the single most effective hairball measure: hair on the brush never becomes a hairball.
- Omega-3s for coat condition, adequate fibre and hydration for gut transit, and a healthy shedding cycle all reduce how much hair goes in and how easily it passes through.
01Why cats get hairballs
A cat's tongue is covered in backward-facing barbs that act like a comb. Grooming collects loose hair, and because the barbs face the throat, most of that hair is swallowed. Small amounts pass through the digestive tract unnoticed. A hairball forms when hair accumulates in the stomach faster than it moves through, and the cat vomits it up instead.
That simple mechanism explains the two levers you can pull. Reduce the hair going in, through grooming and coat health, and support how efficiently the gut moves hair through, with fibre, hydration and digestive health. Long-haired breeds, heavy shedders and enthusiastic groomers naturally sit at the high end of hairball frequency.
02Normal, or a sign of something more?
Usually normal
- An occasional hairball (roughly monthly or less)
- A brief uptick during seasonal shedding
- Normal appetite, energy and toileting in between
See your vet
- Hairballs weekly or more, or a sudden increase
- Retching without producing anything, lethargy, or appetite loss
- Over-grooming, bald patches or skin irritation driving the hair intake
Unproductive retching in particular deserves prompt veterinary attention, as it can signal a blockage or an unrelated condition. Over-grooming can point to itchy skin, parasites, allergies or stress; our guide to cat skin and coat care covers what a healthy feline coat routine looks like.
03The four-part hairball plan
1. Brush regularly. Hair removed by the brush can never be swallowed. Short-haired cats benefit from a weekly brush; long-haired cats need several sessions a week, daily during shedding season. Most cats learn to enjoy it when sessions are short and paired with a reward.
2. Support the coat from within. A healthy coat sheds less excess hair. Omega-3 fatty acids, zinc and quality protein all support skin and coat condition; see our explainer on omega-3 and fish oil for pets for how the fatty acids work.
3. Keep the gut moving. Adequate fibre and good hydration help swallowed hair pass through normally. Wet food or a water fountain lifts fluid intake, and gut health underpins the whole process; our digestive and gut health guide goes deeper.
4. Address over-grooming. If your cat is grooming excessively, treat the cause, not just the hairballs: flea control, skin support and reducing stress all lower the amount of hair going in.
Hair on the brush never becomes a hairball. Ten minutes a week does more than any remedy given after the fact.Fabian Barcelo, Founder & Veterinary Scientist
04Where supplements fit
Nutritional coat support tackles hairballs at the source by supporting a healthy shedding cycle and skin barrier, so less loose, brittle hair is swallowed in the first place. Our Skin & Coat+ formula combines omega-3 fatty acids with skin-supporting nutrients, made in Australia to human-grade standards with every active listed per serve by weight, and is formulated for both cats and dogs. It slots into the same daily routine as any of our pet supplements: one measured serve with a meal, dosed to your cat's weight.
For the full picture of what to look for in any coat product, our skin and coat supplements guide compares the key ingredients and what the evidence supports.
Supplements provide nutritional support for normal skin, coat and digestive function; they do not treat blockages or medical conditions. A cat retching without producing a hairball, off food or lethargic needs a vet promptly.
Frequently Asked Questions
How many hairballs are normal for a cat?
An occasional hairball, roughly one a month or fewer, is generally considered normal, with a brief increase during seasonal shedding. Hairballs every week, or a sudden change in frequency, warrant a veterinary check.
What helps reduce hairballs in cats?
Regular brushing removes loose hair before it is swallowed and is the most effective single measure. Supporting coat condition with omega-3 fatty acids, keeping fibre and hydration adequate for gut transit, and addressing over-grooming all reduce hairball frequency.
Are hairballs ever dangerous?
Rarely, swallowed hair can cause a blockage that cannot pass. Repeated unproductive retching, loss of appetite, lethargy or constipation alongside hairball behaviour are warning signs that need prompt veterinary attention.
Do long-haired cats need different hairball care?
The approach is the same but the intensity is higher: long-haired breeds need brushing several times a week, daily during shedding season, and benefit most from coat-support nutrition and good hydration because they swallow more hair by default.
Fewer hairballs start with a healthier coat
Skin & Coat+ supports a healthy coat and shedding cycle with omega-3s and human-grade nutrients, dosed transparently by weight.
Shop Skin & Coat+ →Human-grade · Australian-made
