Australia's number one hair product is Kérastase Genesis Serum Anti-Chute Fortifiant, an anti-hair-fall scalp serum that ranks as the single most-purchased product in seven of the eight states and territories. The lone holdout is Tasmania, where shoppers crown the Mermade Automatic Curl Tong instead. In other words, the country is almost unanimous — with one very Tasmanian exception.
What Is Australia's Number One Hair Product?
Across Hairhouse's sales nationwide, one product pulls ahead almost everywhere: the Kérastase Genesis Anti-Hair-Fall Serum. It's a leave-in scalp treatment aimed at hair that feels weakened or is breaking and falling more than usual, and its runaway popularity says a lot about what's on Australian minds — shedding, density and scalp health are front of mind for shoppers right now, not just styling.
That tracks with what Hairhouse stylists see on the salon floor. Concerns about hair feeling thinner or shedding more than usual come up constantly, and a daily leave-in serum is an easy first step people can take at home. If you're not sure whether what you're seeing is normal, our guide to the difference between thin and thinning hair is a useful place to start before you spend.
The interesting part isn't that Genesis wins — it's what each state reaches for alongside it. That's where local personality shows up.
Which Hair Products Top the Charts in Each State?
Here's the most-purchased product in each state and territory, plus the local favourite that gives each one its own flavour:
New South Wales: Kérastase Genesis Serum leads, but NSW has a soft spot for overnight repair — the Kérastase Nutritive 8H Magic Night Serum is a standout second.
Victoria: Genesis again, with Victorians buying professional straighteners like the Muk Style Stick 230-IR in serious numbers.
Queensland: Genesis on top, but the Sunshine State over-indexes on shine and frizz control — think glossing oils and anti-frizz treatments, which makes sense in that humidity.
Western Australia: Genesis leads, with the Mermade Automatic Curl Tong a clear local hero.
South Australia: Genesis first, closely chased by styling tools, with the Muk Style Stick a SA favourite.
Australian Capital Territory: Genesis wins, and Canberrans love an all-rounder — the Australian-made ELEVEN Australia Miracle Treatment Cream punches above its weight here.
Tasmania: The exception. The Mermade Automatic Curl Tong is the state's most-purchased product outright, with Genesis in second.
Northern Territory: Genesis on top, with high-shine hair oil close behind for that lit-from-within finish.
Expert Tip: Hairhouse stylists recommend patch-testing any new leave-in serum on your scalp routine for two to three weeks before judging it. Scalp treatments like Genesis work cumulatively, not overnight, so consistency beats intensity — a little every day does more than a lot once a week.
Why Do Different States Buy Different Hair Products?
Almost all of it comes down to climate — and Australia's runs from tropical to alpine, so the data reads a lot like a weather map.
Start up north, where humidity rules. In the Northern Territory's wet-and-dry tropics and Queensland's sticky subtropical summers, moisture in the air lifts the cuticle and turns a smooth blow wave to frizz within minutes. That's why both states lean hardest into shine oils and anti-frizz formulas like the Kérastase Gloss Absolu Glaze Drops — a drop or two seals the cuticle so shine survives the humidity. If that's your daily battle, our breakdown of what actually causes frizz and the routine that fixes it explains why.
Head to the dry-heat states and the priority flips to styling. Perth's Mediterranean summers and Adelaide's famously low humidity mean a sleek or curled style actually holds all day, so Western Australia reaches for the Mermade Automatic Curl Tong and South Australia for the Muk Style Stick straightener — dry air rewards the effort in a way the tropics never allow.
The cool, changeable south tells a similar story for different reasons. Melbourne's "four seasons in one day" and Tasmania's cold maritime climate both keep humidity low, so curls and blow waves last — which is why Victoria buys straighteners in bulk and Tasmania breaks the national pattern entirely, crowning the curl tong its number one. When the weather won't undo your style, a good tool pays for itself.
That leaves two outliers. New South Wales sits in a temperate, humid-coastal middle ground, and Sydney's mix of sun, salt and city pace pulls shoppers toward overnight repair like the Nutritive 8H Magic Night Serum — damage control while you sleep. Landlocked Canberra, meanwhile, swings from bone-dry summers to frosty winters, so the ACT gravitates to a hydrating all-rounder in the ELEVEN Miracle Treatment Cream, which covers every kind of dryness the year throws at it.
Underneath the climate story is a homegrown one, too: three of the standout state favourites — Mermade, Muk and ELEVEN Australia — are Australian-owned brands, holding their own against international icons like Kérastase.
Which National Bestseller Is Right for Your Hair?
The smartest way to shop a bestseller list is to ignore the rankings for a moment and start with your hair's actual concern — the country's favourites each earn their spot for a different reason.
If you're worried about shedding or thinning: the Kérastase Genesis Serum is the national number one for good reason — it's built to strengthen hair prone to falling from breakage, worked into the scalp daily.
If your lengths feel dry or over-processed: reach for an overnight treatment like the Kérastase Nutritive 8H Magic Night Serum, which does its repairing while you sleep and rinses out in the morning.
If humidity and frizz are your daily battle: a few drops of Gloss Absolu Glaze Drops seal the cuticle for shine that lasts — the reason it sells so hard up north.
If you want one product that does a bit of everything: the time-poor shopper's hero is the Australian-made ELEVEN Australia Miracle Treatment Cream, a leave-in all-rounder that hydrates, detangles and smooths in one step.
If you'd rather style than treat: the tools Tasmania and Victoria swear by — the Mermade Automatic Curl Tong and Muk Style Stick 230-IR — deliver a payoff a scalp serum simply can't.
Not sure which camp you fall into? Book a consultation online and a Hairhouse stylist will match you to the right bestseller in minutes — and with Click & Collect ready in about three hours, you can have it in hand the same day.
Frequently Asked Questions
What is the most popular hair product in Australia?
The most-purchased hair product across Hairhouse nationally is the Kérastase Genesis Anti-Hair-Fall Serum, a leave-in scalp treatment for weakened, shedding-prone hair. It ranks number one in seven of the eight states and territories, reflecting how much Australian shoppers currently prioritise scalp health and hair density over styling alone.
Does every Australian state buy the same hair products?
Almost, but not quite. Kérastase Genesis Serum tops the list in most states, yet each has a local favourite — Queensland leans into anti-frizz shine oils, Victoria and South Australia buy more straighteners, and Tasmania breaks the mould entirely, making the Mermade Automatic Curl Tong its number one seller.
Why is a hair-loss serum Australia's top seller?
Shedding, thinning and scalp health have become mainstream concerns rather than niche ones, and a daily leave-in serum is an accessible first step people can use at home. Genesis is designed to strengthen hair prone to falling from breakage, which gives it broad, year-round appeal across very different climates and hair types.
Which Australian hair brands are most popular by state?
Three homegrown brands stand out in the state-by-state data: Mermade Hair (curling tools), Muk (straighteners) and ELEVEN Australia (treatments). Their strong showing alongside international names like Kérastase reflects a genuine appetite among Australian shoppers for locally owned haircare and styling brands.
Curious how your state stacks up? Explore Australia's most-loved products, from the cult Kérastase Genesis Serum to the Tasmania-topping Mermade Automatic Curl Tong, online or in store. Family-owned since 1992 with 100+ stores, salons and studios across Australia, Hairhouse offers Click & Collect ready in about three hours and free standard delivery on orders over $70.