Kérastase Nutritive NZ: Moisture for Dry, Sensitised Hair

Dry hair has a particular feel. It drinks up oil within a day of washing yet still snaps when you brush it. The ends look thirsty under salon lighting. If that sounds like your hair, the Kérastase Nutritive range is built for exactly that problem, and it is one of the lines our colourists reach for when a client sits down and the hair feels parched the moment we touch it.

Here is what Nutritive actually does, who it suits, and how to put a routine together that holds moisture for more than a wash or two.

What dry and sensitised hair really is

There is a difference worth knowing. Dryness is a lack of oil. Dehydration is a lack of water. A lot of hair in Central Otago is both, because our climate is hard on it. Long dry summers, cold alpine winters, hot tools and the after-effects of colouring all pull moisture out of the cuticle, and once that protective layer lifts, water escapes faster than the hair can hold onto it. That is the "sensitised" part: hair that has been weakened enough that it no longer behaves like healthy hair, even if it has never been bleached.

You feel it as roughness, tangling, dullness, and that frizzy halo that appears no matter how carefully you blow-dry. Nutritive is formulated to refill that lost moisture and seal the cuticle so the water you put in actually stays in. If your hair leans more towards general dehydration without colour damage, our dry and dehydrated edit gathers everything we recommend for thirsty hair in one place.

The ingredients doing the work

Nutritive is built around Kérastase's Iris Root extract and a blend of glycerin and niacinamide. Glycerin is a humectant, which means it draws water into the hair fibre and helps keep it there. Niacinamide supports the hair and scalp barrier so moisture is less likely to leak back out. The result is hair that feels supple rather than coated, which matters because a lot of moisture products simply sit on the surface and weigh hair down without genuinely hydrating it.

What we like, from a stylist's point of view, is that the range is weighted by hair thickness rather than sold as one-size-fits-all. That is the key to getting it right.

Choosing your Nutritive line

Nutritive splits into two main directions depending on how fine or thick your hair is.

Fine to medium, dry hair. The Bain Satin cleanser and the lighter conditioners in the range hydrate without flattening. This is the right call if your hair is dry at the ends but goes limp the second you put anything heavy on it. If volume is your real concern alongside dryness, it is worth looking at fine and volume options too, since some clients do better splitting their routine.

Thick, very dry hair. The richer Masquintense mask and the deeper-feeding products are made for hair that can take, and needs, more. Thick dry hair tends to feel like it absorbs everything and stays thirsty, so a heavier weekly treatment makes a visible difference.

If you are not sure which camp you fall into, the simplest test is how your hair feels a day after washing. Greasy at the roots but dry at the ends usually means go lighter at the scalp and richer on the lengths. Dry all over means you can go richer across the board.

Building a routine that holds

Moisture is not a one-product fix, and this is where most home routines fall down. A shampoo cleanses, but it cannot deliver lasting hydration on its own. Here is how we layer it in the salon and what we send clients home with.

Start with the right shampoo for your thickness, then always follow with a conditioner through the mid-lengths and ends. Once or twice a week, swap your conditioner for a Nutritive mask from our masks and treatments range, left on for five minutes while you are in the shower. That weekly treatment is the step that actually changes how your hair behaves over a month.

For an extra layer, the Nutri-Supplement and the 8H Magic Night Serum are leave-in style boosters that keep working between washes. Anything you apply to damp hair and don't rinse out falls under leave-in treatments, and for dry ends these are quietly the products that stop the afternoon frizz. A few drops of a finishing hair oil on the ends seals everything and adds the shine that dehydrated hair loses first.

Where Nutritive sits in the wider Kérastase world

Nutritive is the moisture specialist, but it is one of several Kérastase ranges we stock, and matching the range to the problem matters. If your dryness comes mostly from damage, breakage or over-processing, Kérastase Résistance is built to rebuild structure rather than just hydrate. Blondes dealing with brassiness and dry, porous lengths often do better starting with Blond Absolu, which pairs neutralising tone-care with hyaluronic acid hydration. You can browse the full Kérastase line-up if you want to see how the ranges compare side by side.

For coloured hair specifically, hydration and colour protection go hand in hand, so it is worth looking through our colour-treated edit when you build your routine. Colour-treated hair is almost always more porous, which means it loses moisture faster and needs that weekly mask more than virgin hair does.

Is Kérastase Nutritive worth it?

It is a premium range, and we will be honest about that. What you are paying for is concentration and formulation. A little goes a long way, the treatments genuinely outlast cheaper masks, and the difference in how dry hair feels after a few weeks is the reason it is the first range so many of our clients restock without being asked. If your hair has felt dry and lifeless for a while and the supermarket aisle hasn't fixed it, this is the step up that usually does.

Everything we stock is genuine Kérastase, sourced as an authorised stockist, so you are getting the real formulas rather than grey-market product that may be old or counterfeit. That matters more than people realise with salon brands.

If you would like a hand matching the right line to your hair, the team is always happy to point you in the right direction. Shop Kérastase Nutritive at Crew for dry, sensitised and dehydrated hair, with free NZ shipping on orders over $99.

Frequently asked questions

What is Kérastase Nutritive used for?

Kérastase Nutritive is formulated for dry, dehydrated and sensitised hair. It uses glycerin and niacinamide alongside Iris Root extract to refill lost moisture and seal the cuticle so hydration lasts longer between washes.

Which Kérastase Nutritive line should I choose?

Choose by your hair thickness. Fine to medium dry hair suits the lighter Bain Satin and conditioners so it isn't weighed down, while thick, very dry hair does better with the richer Masquintense mask and deeper-feeding products. If you're unsure, go lighter at the scalp and richer on the ends.

Is Kérastase Nutritive good for coloured hair?

Yes. Coloured hair is more porous and loses moisture faster, so Nutritive's hydration suits it well, especially with a weekly mask. If your main concern is breakage or over-processing rather than dryness, Résistance may be a better starting point, and blondes often pair Nutritive with Blond Absolu.

Do you ship Kérastase across New Zealand?

Yes. Crew Stylists is a Queenstown salon and authorised Kérastase stockist shipping genuine product NZ-wide, with free shipping on orders over $99.

How often should I use a Kérastase Nutritive mask?

Once or twice a week, in place of your conditioner. Apply through the mid-lengths and ends, leave for around five minutes in the shower, then rinse. This weekly treatment is the step that makes the biggest difference to how dry hair feels over time.