Key Takeaways
- Kérastase offers a variety of serums tailored to specific hair issues, making it essential to choose one that addresses your personal hair concerns.
- Nutritive Nutri-supplement Scalp Serum is perfect for those with dry scalps, providing nourishment and hydration with a lightweight, non-greasy formula.
- Specifique Potentialiste Serum helps to soothe itchy, sensitive scalps, offering a revitalising treatment that balances moisture levels efficiently.
- 8hr Magic Night Serum acts as a nourishing overnight treatment, making it an ideal choice for those seeking intense hydration for dry, coarse hair.
- Elixir Ultime Beautifying Hair Oil serves multiple purposes as a heat protectant, leave-in conditioner, and frizz tamer, making it indispensable for various hair types.
- Genesis Fortifying Anti Hairfall Serum is specifically designed to promote healthy hair growth and reduce hair loss due to breakage, ideal for anyone concerned about thinning hair.
- Choosing the right Kérastase serum depends on understanding your hair type and specific needs, encouraging you to invest wisely in haircare products.

Kérastase is easily one of the best-selling haircare brands at Adore.
From the wildly popular Kérastase anti-hair fall serum to the Kérastase overnight serum people reckon is 'magic' in a bottle,
Kérastase products quite literally fly off our shelves.
Previously, I broke down
the top 10 Kérastase products, and you know which one came in at #1?
The iconic Kérastase hair serum (otherwise known as the
Kérastase Elixir Ultime Beautifying Hair Oil or the Kérastase oil serum).
But did you know there are actually several Kérastase hair treatments that can all do different things for your hair?
During my time in the AB Customer Experience Team, I got asked which Kérastase treatment is right for me more often than you would think.
Kérastase products are premium - with a premium price tag - so if you’re not too sure which one to splurge on, here I am, making your life easier.
From hair loss and itchy scalps, to dry ends and frizz, keep reading to find out which cult Kérastase treatment will give you your best hair day, ever.
What Do Hair Serums Do?
But first, a quick recap on what hair serums and treatments actually do.
I like to think of your haircare routine in skincare terms...
Think of shampoo as your cleanser, and conditioner or masks as your moisturiser.
But if you really want to target your hair and scalp concerns, serums will elevate your routine.
Hair serums and treatments can do lots of different things, depending on the formula:
Some coat the hair to help strengthen, thicken and repair dry or damaged hair.
Others create a barrier to protect the hair against pollution, UV or heat styling damage.
There are hair serums that function as scalp treatments or hair growth treatments.
You've also got products that fight frizz for softer, shinier-looking hair.
Some hair oils, serums and treatments even do all of the above.
Best Kérastase Hair Serums.

Kérastase hair treatments are all formulated with specific hair concerns in mind.
So, how do you know which Kérastase serum to add to cart?
Just like you would with skincare, shop for hair products based on the hair concerns you want to manage.
Otherwise, it's easy to drop your hard-earned moolah on a great product that might not be a great fit for you.
Once you know your hair type and concerns, you can find a product to match.
Now we’ve covered the basics, allow me to explain the difference between Kérastase’s top five hair treatments, oils and serums.
1. Kérastase Nutritive Nutri-supplement Scalp Serum.

What:
Kerastase Nutritive Nutri-supplement Scalp Serum 90ml is the newest addition to the Kerastase range, sitting within the
Nutritive family it works to deeply nourish dry scalps.
Fast facts:
Essentially, this little serum nutrient supplement for your scalp, is fast-absorbing and delivers vitamins to keep your scalp hydrated.
Dry scalp havers, this one is definitely the one for you.
Formulated with niacinamide and a vitamin blend to keep your scalp happy and healthy.
Is a non-greasy, lightweight formula that smells divine (like the whole Nutritive range).

Best for:
The Kerastase Nutri-Supplement Scalp Serum is most suited to those with dry, dehydrated scalps or those just looking to support and maintain a healthy scalp.
How to use the Nutri-Supplement Scalp Serum:
It won’t matter too much if your scalp is dry or damp, it can be used on both. Section your hair and apply a dose to your scalp then massage it in. If your hair needs more TLC, massage in another dose.
My Kérastase scalp serum review:
I've been using it for a couple of weeks and am obsessed with the soothing scent, it smells exactly like the Kérastase 8hr Magic Night Serum.
The lightweight serum feels super comfy on the scalp skin and leaves the scalp feeling ever so fresh.
I made everyone around me in the office that day try the serum and you best believe everyone had fresh, glorious-smelling scalps.
2. Kérastase Specifique Potentialiste Serum.

What:
Kerastase Specifique Potentialiste Balacing Scalp Serum 90mL is a revitalising scalp and hair serum to balance moisture levels and remove the unpleasant feeling of a dry, itchy, irritated scalp.
Fast facts:
Kérastase Specifique Potentialiste Serum is specifically formulated to rebalance and soothe oily, dehydrated and sensitive scalps.
This serum has a gel-like texture that feels light and sinks into the scalp once massaged in.
Creates a volumised style, leaving roots looking lifted and feeling fresher, lighter and healthier.
The hero ingredients of this scalp serum include a vitamin C derivative and prebiotics to defend the scalp against heat styling, dirt, oil and other pollutants.

Best for:
Dry, itchy, flaky, sensitive scalp-havers, I'm looking at you!
Anyone who feels like their roots look greasy and feel uncomfortable soon after hair washing.
If you're after a hair treatment that helps with scalp health and hair growth.
How to use this Kérastase scalp serum:
To get the absolute best results, use this once daily, either in the morning or before bed.
Apply a pipette to each section of your scalp, one section at a time. Each pipette is one dose, the recommended amount is three doses.
Massage, leave in and do not rinse. I like to focus the product application where my scalp gets irritated.
Kérastase Specifique Potentialiste reviews from AB customers:
"This stuff is like magic for me, it fixes any scalp concern I have overnight and I have so much new hair growth (probably because my scalp is better). Doesn't make my hair oily or feel weighed down. I have thin hair that gets oily very easily. I got it as a sample initially, but seriously highly recommend." - Mel.
“Definitely worth every penny! On the 3rd day after washing my hair or sometimes even the 2nd I get an unbearable itchy scalp so bad that I'd cause my scalp to bleed and causing a tonne of sores on my scalp." - Ali B.
3. Kérastase Nutritive 8hr Magic Night Serum.

What:
I like to think of the
Kerastase Nutritive 8HR Magic Night Hair Serum 90ml as an ultra-nourishing night cream, for your hair.
Fast facts:
This Kérastase night serum features Iris Root extract and a powerful blend of five vitamins to restore and rebalance all dry hair types.
An excellent overnight treatment to nourish damaged and dry hair, as well as make coarse and frizzy hair more manageable.
Hydrates fine hair without being too heavy, and can also be used as a detangler.
The Kérastase overnight serum has a soothing fragrance to help you doze off.

Best for:
People with very dry and dehydrated hair looking for something intensive.
The time-poor, because it works while you sleep!
Coarse or thick hair-havers who want more manageable hair.
How to use Kérastase 8h Magic Night Serum:
Yes, this is a hair serum you wear to bed. Don't worry, it shouldn't leave you with a sticky pillow.
Before bed, gently work a couple of pumps of the serum into dry hair from mid-lengths to ends.
If using on damp hair, blow dry or leave to dry naturally. Either way, no rinsing required!
Kérastase overnight serum reviews from AB customers:
"I wish I tried it sooner! The smell is really special. I applied thinking it would leave my hair oily and I'd have to wash it out in the morning. It left my hair feeling soft and not greasy at all, and defined my very slight natural wave." - Jessie.
"This was the first professional haircare product I used, and I still use it to this day. I LEGIT thought it was magic. I could not believe how soft my hair felt the next morning. I was hooked!" - Hannah.
4. Kérastase Elixir Ultime Beautifying Hair Oil.

What:
Kerastase Elixir Ultime hair oil 75ml is a lush multi-use hair product that's been dubbed the "little black dress of hair oils" because it genuinely does it all.
Fast facts:
Multi-use hair oil works as a pre-shampoo treatment, heat protectant, leave-in conditioner, detangler, anti-frizz serum and shine serum, plus more!
Light enough for fine hair, but super concentrated blend of sacred oils nourishes coarser hair types too.
Looking for a Kérastase anti-frizz serum? This hydrates and softens the hair while adding shine and controlling frizz - even in 80% humidity.
With over 300 five-star reviews, this award-winning, multi-tasking hair oil is worth every penny.

Best for:
If you’re a human with hair,
Kerastase Elixir Ultime Original Hair Oil 100ml would do wonders for you.
To be more specific, it's *chef's kiss* for anyone who finds their hair turns hay-like.
Those who want a one-and-done heat protectant, shine enhancer and frizz tamer.
How to use this Kérastase oil serum:
Take one to two pumps into your hands and work the product through the mid-lengths and ends of damp or dry hair.
TA-DA! Shiny, frizz-free locks.
Watch how Beauty IQ writer Sadaf uses the Kérastase oil serum in the video below.
Kérastase hair serum reviews from AB customers:
With a 4.6-star rating on Adore Beauty and a whopping 527 reviews, 94% of our customers would recommend this product.
“This beautiful hair oil is one of my favourite beauty products ever. It gives me the softest hair, makes it more manageable when styling and gives it a shiny finish. It also happens to smell divine. I will forever repurchase.” - Sadaf.
"I really love this product, from the lovely bottle and ease of use with the pump dispenser, to the quality of the oil. Adds a lovely sheen, without the heaviness of similar hair oils." - Teej.
5. Kérastase Anti Hair Fall Serum.

What:
Kerastase Genesis Fortifying Anti Hairfall Serum 90ml is a scalp serum that helps to support the skin’s natural barrier function to promote healthy hair growth.
Fast facts:
Think of this little gem as your Kérastase anti-hair fall serum or your Kérastase hair growth serum.
Helps to soothe an irritated scalp, while working to strengthen existing hairs, and reduce hair fall from breakage.
Aminexil targets excessive hair fall from the follicle, ginger root protects the hair, and caffeine stimulates the scalp.
Works great for all hair types and hair textures, and is safe for coloured hair, too.

Best for:
Kerastase Genesis Fortifying Anti Hairfall Serum 90ml will be your saviour if you've been noticing more hair on the bathroom floor or in your hairbrush.
How to use the Kérastase Genesis serum:
For the best results, apply four drops to towel-dried hair - there's a helpful little maker on the pipette.
Working section by section, massage it into the scalp and leave in. Repeat once daily, either in the morning or before bed.
Pair with the
best-selling Kérastase Genesis shampoo and expect light, soft, healthy-looking hair.
Kérastase Genesis serum reviews from AB customers:
"This is the best serum I have ever used. So good! Worth the money." - Happi.
"This gives beautiful volume, shine and silkiness. Works lovely as a root lifter." - Jacqui.
"Ever since I started using this, my hair loss has reduced quite a bit." - Merry.
Which Hair Serum Should I Use?

To sum it up:
If your hair always feels dry, or the words ‘overnight deep conditioning treatment’ get you excited, try the Kérastase overnight serum.
For those like me who could deep fry some nuggets with the oil their scalp produces (no judgement), give the Kérastase Specifique Potentialiste serum a go.
On the other end of the spectrum, scalp feeling like the Sarah Desert? Kérastase Nutri-Supplement Scalp Serum is the one for you.
Hair looking frizzy and dull? Or want a product that does it all?
Kérastase Elixir Ultime Beautifying Hair Oil is the cult original.
Or experiencing hair fall from breakage, or want a hair growth serum in your routine?
Look no further than the Kérastase Genesis serum.
Moral of the story: There's a Kérastase hair serum to suit literally everyone.
Now all you have to do is add the best Kérastase serum for you to cart.
P.S. Learn more about Kérastase products in this YouTube video below.
Still not sure? Take our Kérastase hair quiz!
Want to read more Kérastase reviews? Check out these articles below!