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Rating: 3.6Based on 29 reviews
  • Most helpful positive

    Hanna

    The post was made 2 days
    Rating: 4 out of 5

    Worth a try!

    I got to test this serum through smartsson. I think the serum feels good in the hair and seems to do its thing. It doesn't feel frizzy at all and it doesn't weigh the hair down, which I appreciate. I wouldn't necessarily say that my hair gets shiny from the serum, but I also feel that my hair isn't at its best right now. I have a 9-month-old baby and I'm breastfeeding, so I assume that’s related. I'm participating in a test panel and received a free test product.
    154 views
  • Most helpful negative

    Sarah

    The post was made 4 days
    Rating: 1 out of 5

    Honest review of the serum as a test product

    I had the honor of testing the Kérastase Première Sérum Filler Fondamental Hair Serum for free. My first thought was that the container and packaging exude quality. The bottle feels sturdy and looks nice, which is great so you don’t have to hide all your products in a cabinet. The consistency felt lovely, and upon application, my hair felt wonderful, but unfortunately, that’s where my positive feedback ends. The serum was really not for me unfortunately. It has a very strong scent that is quite masculine, which was not at all a favorite of mine. Furthermore, I experienced that the serum had negative effects on my hair. I have thin and fine hair with waves/curls, and even though the serum is supposed to be for all hair types and combat frizz, I just got more frizz and the texture of my hair flattened out, which made my hair look damaged. I didn’t get shine, softness, or reduced frizz, unfortunately. Unfortunately, I think a serum in this price range should hold a higher standard, therefore I was extremely disappointed with the result, even though I tested the serum several times with different amounts of product each time. Now I just hope that my waves/curls return if I stop using the serum 💔 I am participating in a test panel and received a free test product.
    140 views

  • Julia

    The post was made 38 minutes
    Rating: 4 out of 5

    The hair becomes very manageable!

    I thought this product would help make my hair less frizzy. And it does!! After just one use, you can really feel and see the difference! The hair becomes manageable, and frizz is absolutely not a problem! My hair is actually in need of a trim right now, but I tried this first, and I must say the ends feel much fresher! The reason it gets 4/5 ⭐ is that if you, like me, naturally have very straight hair, it becomes very difficult to put up or style, as it becomes very manageable and shiny, like hair ties just fall out 😅 In the picture, I have used the product 1 time after washing my hair. For my hair, 1-2 pumps have been sufficient, which means it lasts a long time! 🥰 I am participating in a test panel and received a free test product.
    4 views

  • julia

    The post was made 11 hours
    Rating: 4 out of 5

    Love-Hate

    I have a bit of a love-hate relationship with this product. The packaging feels very luxurious and the serum really smells soooo good. I've tested it a couple of times and it makes my hair feel soft, smooth, and shiny. But it has also made my hair greasy, the same feeling as when you don't rinse out all the conditioner. Then my hair gets greasy quickly, which probably affects a lot. But I think the positives outweigh the negatives and that it's really worth trying!! I'm participating in a test panel and received a free test product!
    59 views

  • Lovisa

    The post was made 1 day
    Rating: 2 out of 5

    Honest review as a test pilot

    I experienced that the product didn't help in the morning at all. I have Scandinavian hair, a lot of hair but very thin. My hair got greasy quite quickly, I really didn't feel like the product did anything. Maybe I used too little, but I thought 4-5 pumps for the hair just above the chest should be enough, every time I blow-dried and styled my hair, but as I said, the product gave nothing, neither a pleasant scent nor anything. I actually do not recommend it for the hair type that I have! I am participating in a test panel and received a free test product.
    110 views

  • Josefin

    The post was made 3 days
    Rating: 2 out of 5

    A disappointment

    Unfortunately, this serum did not live up to expectations at all. The scent is strong and smells like an old lady's perfume, which makes me not even want to put it in my hair. I also notice no difference, neither in softness, shine, nor hydration. My hair feels exactly the same as before, despite several attempts. I expected more considering the price. The positive aspect of the product is the consistency and the bottle, the pump function is really good. I am participating in a test panel and received a free test product.
    182 views

  • Emmelie

    The post was made 6 days
    Rating: 3 out of 5

    Honest Review

    I was really looking forward to trying this hair product, as I have read a lot of good things about its ability to tame frizzy and damaged hair, which is something I really need. The packaging exudes quality, and I sincerely hoped this would be the solution for my tired hair. The consistency is pleasant, and the scent is a refreshing blend of citrus and a hint of masculine perfume? Additionally, it's a big plus that it doesn't weigh down the hair or make it oily. I also experienced some improvement in split ends and increased shine in my hair, which is positive. But despite this, I feel a bit disappointed. I had hoped for a more noticeable effect on my frizzy hair, as well as deeper hydration and nourishment. The result is acceptable but nothing wow. Sure, the hair gets a nice shine and split ends look somewhat better, but it's not enough for me to feel that the product really makes a big difference. In summary, it's a perfectly okay product, but not something I would invest in again. I am participating in a test panel and received a free leftover product.
    158 views

  • Laila

    The post was made 1 week
    Rating: 2 out of 5

    Sérum Filler Fundamental Hair Serum

    I have naturally wavy hair that easily gets frizzy, especially since I often use heat tools and haven't always been so careful with hair care. I hoped this product would make my hair softer, give it more shine, and reduce frizz, but despite trying different amounts, from 2 to 4 to 6 pumps, I unfortunately saw no noticeable difference. The consistency is thin and feels neither oily nor silicone-like. The bottle is luxurious and the scent is fresh and citrusy, which I really like. I just wish the results had lived up to the nice packaging and lovely scent. I am participating in a test panel and received a free test product.
    129 views

  • Elina

    The post was made 1 week
    Rating: 3 out of 5

    Sérum Filler Fundamental Hair Serum

    I have long, dry, and straight hair with blonde highlights and have been using this serum for a few weeks now. Unsure what the right amount is, but I usually take 3-4 "pumps". Good consistency and easy to distribute in the hair. However, I haven't noticed any significant difference in my hair yet - maybe I need to give it a bit more time. It feels like the serum should do a lot of good for the hair according to the description anyway. However, I don't think it smells that good, too much for my taste. I would have preferred a more feminine scent. I am participating in a test panel and received a free test product.
    158 views

  • Emma

    The post was made 1 week
    Rating: 3 out of 5

    Pretty okay product but no wow effect.

    I’m a bit torn about this product. It smells incredibly good, really that kind of salon scent that lingers for a long time, and my hair feels a bit softer after use. However, I haven’t noticed any huge difference, more than it feels a bit fresher and easier to detangle. I think it needs a bit longer before you see any clearer effect, so I’ll continue using it for a while longer before I make a final decision. The packaging feels luxurious and it’s easy to use, so I really hope the results come with time! I’m participating in a test panel and received a free test product.
    146 views

  • Caroline

    The post was made 1 week
    Rating: 4 out of 5

    🩷Product that makes a difference

    I have been trying this product for a few weeks now and I love it. Feels luxurious, smells good, and makes a difference in hair texture. I think my hair stays fresher longer. I also love that it has heat protection in it and should be applied to towel-dried hair❤️‍🔥 the cream is easy to apply, there’s no surface on the hair that feels heavy or gross. I feel like my hair feels thicker in some way after using this product. It will be exciting to see if it gives results in the long term since I have already seen a difference in the time I have tested the product. I think the price is high, but if this product really makes a difference, I think it’s worth spending a little more money on it. The packaging feels luxurious and sturdy. I tested the product through a test panel, received the product at home via Smartson🩷 I am participating in a test panel and received a free test product.
    193 views

  • Emma

    The post was made 1 week
    Rating: 3 out of 5

    Kérastase Premiére Serum Filler Fondamental Hair Serum

    I have now had the chance to test Kérastase Premiére Serum Filler Fondamental Hair Serum for a little while and would absolutely give it a thumbs up! I have hair with a lot of volume and have previously done light highlights a few times. My hair easily gets frizzy, and therefore it was exciting to see what this product could do for my hair. I really like the packaging, the scent, and the consistency of it, but I thought it would give more results than it did for my hair. The hair becomes softer and a bit less frizzy, but not “wow” as I thought. It gives a little extra shine which is nice, but I would have liked a bit more effect ♥️🙏🏻 #kerastase #smartson
    247 views

KérastasePremièreSérum Filler Fondamental Hair Serum 90 ml

775 kr
Free delivery option available, can be sent immediately

Sérum Filler Réparateur by Kérastase is a leave-in repairing anti-breakage filler hair serum. This anti-frizz serum works to seal and fill hair strands, and protect them from the heat of styling tools, leaving hair shiny and strong.
Kérastase Première Sérum Filler Fondamental is a lightweight leave-in treatment for the inner repair of all types of damaged hair, leaving it glossy and supple:
- Repels humidity, deeply nourishes and locks out frizz; - Fills fiber surface with matter to recreate softer and smoother hair; - 55% softer hair* - 3x more moisturized hair* - Protects from heat, up to 230°C* - 99% stronger hair* - 72H anti-frizz*
*Instrumental test after 1 application of the serum

Use:
Apply on towel-dried hair. Leave-In. Blow-dry and heat style

90 ml

Also available in bundle

Kérastase
Pre-shampoo, Bain, Serum
1 879 kr
Without bundle: 2 094 kr

Often bought together

1 530 kr

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