L'Oréal Professionnel vs Kérastase: How to Choose (NZ Guide)

It's one of the most common questions we get at the basin once a client clocks that both brands sit on our shelf: L'Oréal Professionnel or Kérastase? They're made by the same parent company, the bottles look smart either way, and the price gap is real enough to make you pause. So when you're comparing L'Oréal Professionnel vs Kérastase here in NZ, what are you actually choosing between?

We use both on real clients every week at Crew, so this isn't a spec sheet read off a box. Below is how our colourists think about it, where each brand genuinely shines, and a few honest trade-offs so you can spend your money where it'll make a difference to your hair.

The short answer first

L'Oréal Professionnel is the dependable, hard-working salon brand. It does targeted jobs well, at a price that doesn't make you wince, and it's brilliant when you have one clear concern to solve, like protecting colour or repairing damage. Kérastase sits a tier above. It's the more luxurious, more concentrated, more sensorial line, with finely tuned ranges for very specific hair types and a finish that feels noticeably more indulgent in the hand and on the hair.

Neither one is "better" in a vacuum. The right pick depends on your hair, your routine, and how much of your budget you want sitting in the shower versus on the styling shelf. You can browse the full L'Oréal Professionnel and Kérastase ranges to see the breadth of each before you decide.

What L'Oréal Professionnel does best

Think of L'Oréal Professionnel as the workhorse. The ranges are built around a clear problem, and they tend to solve it without fuss.

• Absolut Repair is our go-to for dry, damaged, over-it hair that needs strength back fast. If you've been heat-styling all winter or your ends feel like straw, this is a sensible, affordable rescue. There's also Absolut Repair Molecular for hair that's been chemically pushed harder, like repeat lightening.
• Vitamino Color is a quiet hero for coloured hair. It's gentle on the cuticle, keeps tone truer for longer, and is an easy yes for anyone who invests in their colour but doesn't want to spend a fortune maintaining it.
• Metal Detox is the one we recommend most to blondes and anyone on rural or bore water in NZ. Metal particles in your water supply are a big reason colour goes brassy and dull. This range genuinely helps, and it's worth the shelf space.
• Tecni.ART covers the styling side, from texture sprays to strong-hold finishes, and it's the line we reach for behind the chair when we need a reliable result.

The honest trade-off: L'Oréal Professionnel feels a little more functional than fancy. The textures and fragrances are pleasant rather than swoon-worthy, and the conditioning hit, while good, isn't as rich as Kérastase on very thirsty or compromised hair. For most people that's a perfectly fair swap for the lower price.

What Kérastase does best

Kérastase is where you go when you want the full experience and a result tailored to a very particular hair type. The formulas are more concentrated, so a little goes further, and the ranges are split out with real precision.

• Nutritive is the comfort blanket for normal-to-dry hair, lightweight nourishment that doesn't weigh you down. For deeper repair on damaged hair, Résistance is the heavy lifter.
• Blond Absolu is, hands down, one of the most-loved lines we stock. If you're a blonde who wants brighter, cooler, more hydrated hair, the hyaluronic-acid-rich masks here are worth every cent. Pair it with Chroma Absolu if your priority is keeping coloured hair glossy and protected.
• Genésis targets hair that's shedding or feeling weak at the root, while Densifique is aimed at thinning, fine hair that wants more body.
• Curl Manifesto is one of the better curl ranges on the NZ market for defined, hydrated curls and waves, and Elixir Ultime is the famous oil that makes almost any hair type look glossier and more expensive in seconds.

The honest trade-off: you're paying for it. Kérastase costs more per bottle, and if your hair is healthy and low-maintenance, you may not feel the full benefit of that extra concentration. Where it earns its keep is on hair with a specific, stubborn need, and for anyone who genuinely enjoys the ritual of a beautiful product.

How to choose: match the brand to your hair

Here's the simple way we talk clients through it in the chair.

If you're blonde or highlighted

Both brands have your back, but for the brightest, most hydrated blonde, Kérastase Blond Absolu is the upgrade. On a tighter budget, L'Oréal Metal Detox plus a purple shampoo does a lot of the heavy lifting. Start with our blonde and highlighted edit.

If your hair is coloured but not blonde

L'Oréal Vitamino Color is the value pick, Kérastase Chroma Absolu the luxe one. Either will hold your tone longer than supermarket haircare. See everything in colour-treated.

If your hair is dry or dehydrated

For everyday dryness, Kérastase Nutritive or L'Oréal Absolut Repair both work beautifully. Browse dry and dehydrated options and add a weekly mask from our masks and treatments.

If your hair is damaged or over-processed

This is where the heavy repair lines come in: L'Oréal Absolut Repair Molecular or Kérastase Résistance. Have a look at the damaged and broken collection.

If your hair is fine or thinning

Kérastase has the edge here with Genésis and Densifique. The fine and volume edit pulls the best of both brands together.

If you have curls or waves

Kérastase Curl Manifesto is our standout, and the wider curly and wavy range has supporting products to keep curls defined and frizz down.

And if you just want a quick gloss-boost regardless of hair type, an oil from our hair oils is the easiest win in either brand.

What about Pureology and Redken?

Worth knowing, because they often come up in the same conversation. Pureology is our pick for colour-treated hair where you also want sulphate-free and vegan formulas, and it's a lovely middle ground on price. Redken is strong on bond-building and acidic care for hair that takes a beating from styling and chemical work. We're an authorised stockist of all four brands, so everything we sell is genuine and in-date, which matters more than people realise when you're buying salon haircare online in NZ.

Our honest take from behind the chair

Most clients land on a mix rather than picking a single brand. A common combination we'll suggest is a value-led L'Oréal Professionnel shampoo and conditioner for everyday washing, then a Kérastase mask or oil as the weekly treat that does the real repair work. You get the practical maintenance covered without the luxury price on every bottle, and you still get that salon-quality finish where it counts.

The thing to avoid is buying on the label alone. A beautifully packaged product aimed at the wrong concern won't do much. Read your hair first, then the brand, and you'll get far more out of whatever you choose.

Shop Kérastase and L'Oréal Professionnel at Crew. We ship genuine, authorised salon haircare NZ-wide with free shipping over $99. Browse the full Kérastase and L'Oréal Professionnel ranges, or explore all our haircare to find your match. Not sure which is right for you? These are the products our colourists actually use on clients, so flick us a message and we'll point you to the right one.

Frequently asked questions

Are L'Oréal Professionnel and Kérastase made by the same company?

Yes, both are part of the L'Oréal Group's professional division. They share research and technology, but they're positioned differently. L'Oréal Professionnel is the dependable, accessibly priced salon range, while Kérastase is the more concentrated, luxury line with highly targeted ranges for specific hair types.

Is Kérastase worth the extra money over L'Oréal Professionnel?

It depends on your hair. If you have a specific, stubborn need like very dry, blonde, thinning or curly hair, Kérastase's more concentrated formulas genuinely earn the higher price. If your hair is healthy and low-maintenance, L'Oréal Professionnel will likely do everything you need for less. Many of our clients use a mix of both.

Which is better for blonde hair, L'Oréal Professionnel or Kérastase?

For the brightest, most hydrated blonde, Kérastase Blond Absolu is our top pick. If you're watching your budget, L'Oréal Professionnel Metal Detox paired with a purple shampoo does a lot of the work, especially in NZ where bore or rural water can dull and brass out blonde.

Can I buy genuine Kérastase and L'Oréal Professionnel online in NZ?

Yes. Crew Stylists is an authorised stockist of both brands, so everything we ship is genuine and in-date. We deliver NZ-wide with free shipping on orders over $99. Buying from an authorised salon stockist is the safest way to avoid expired or counterfeit salon haircare.