Reviews & comments

• Most helpful positive

  Bergit

  7 months

  Rating: 4 out of 5

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  Difficult to assess the effect after only 4 weeks of use..

  I received this exciting hair product for testing as #LYKOINFLUTESTER. This is a strengthening serum from Kérastase that, according to the product description, is supposed to prevent hair loss due to hair breaking. The serum has ingredients that are supposed to make the hair more resilient and minimize hair loss. The serum is supposed to strengthen and care for the naturally protective barrier in the scalp. The serum should be used once daily in the morning or before bedtime. You can apply up to 4 doses to a dry or towel-dried scalp, section by section. 1 dose = 1 pipette to the mark. The serum should be lightly massaged in and not rinsed out. I was super excited to test this serum since after three pregnancies (six years since the last) I have gotten thinning around the hairline on my forehead. Here, the hair grows extremely poorly, and the little that grows gets a maximum of 6 cm long. Exciting to see if this serum could help. I also generally have hair that never gets as long as I want because it breaks and splits easily. I otherwise have medium-length, Nordic, fine hair with slightly bleached ends - otherwise untreated. I’m starting to go gray (I’m 43 years old). These are my thoughts on the product after 3.5 weeks of use: ✅ Lovely container that looks good on the bathroom shelf ✅ Good pipette that makes application easy, doesn’t drip. ✅ The product doesn’t feel sticky on the hands afterwards (even though you should of course wash it off) ✅ The hair doesn’t feel greasy at all when used (I’ve used it in the evening) 🚨 Quite okay scent (but relatively strong). Smells a bit masculine ❌ The bottle is not very economical in use and the price is quite high. I applied 4 doses each time and used up the product in 4 weeks. ❌ No visible results after four weeks. Maybe you need to use it longer to see results (but now the bottle is empty…) I find it difficult to properly assess this product since I feel it should be used over a longer time frame to see any potential results. #LYKOINFLUTESTER #KERASTASE

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  • Cathrine

    6 months

    Thorough and honest review

    19 likes

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• Most helpful negative

  Anna

  7 months

  Rating: 2 out of 5

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  Nja

  As an influencer, I had the honor of testing this product. The packaging: In glass that feels sleek and luxurious with a smart pipette. So pretty with the ombre colors too. The consistency is gel-like and wonderfully cooling. Good consistency as it doesn't run out so easily 👌. It smells so good, both orange/citrus and a bit of woody undertone yum. Very fresh scent. I feel that the scent settles after a while, which I think is good since I have worked in healthcare. Smells mild but not too strong after a few hours. The pipette has a good clear marking for how much to take and is easy to handle 👌. When I apply the serum, I feel fresh. But my hair gets greasy, and I find it stiff/chunky after it dries. I don't like that it gives me such a greasy impression, something I really work to avoid. Even the next day, I find my hair greasier and with a strange slightly stiffer feeling in my hair. Which I don't like. I've been using it for a while now and notice no significant difference in my hair at all. I assume you need to use it longer. But I'm most irritated that my hair feels so greasy after a while within 1 hour of application for me unfortunately. So I think it's a ridiculously expensive product to give me greasier hair and no difference in hair quality, but I assume you need to use it for more than 2 weeks. I'm not that impressed yet, but I get to test it a bit longer to see if it gets better going forward. But I don't like the feeling in my hair after it has been a while. In the beginning, it feels super fresh and good, which then turns into a greasy strange feeling in the hair🙈. #LYKOINFLUTESTER #KERASTASE

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• Camilla

  3 days

  Rating: 4 out of 5

  Feels good!

  I have been so lucky to be #lykotestpilot for #kerastase 's genesis series, both shampoo, conditioner, and the serum. For reference, I have chemically treated hair and have struggled with some hair loss. I have used the serum almost every day since I received it a little over two weeks ago, and it feels good! I have used to apply it every time after I showered and then blow-dried it a bit in, or in the evening on dry hair. It can look a bit "greasy", but it works well overnight. I received the products a bit late in relation to the review deadline, so I can't give a full assessment on whether it has helped with hair loss ☺️ The serum is in a glass bottle with a dropper that is to be used to distribute the serum in the hair. The bottle itself is a bit heavy and not the most practical to take on trips, but it also feels luxurious 😍 The dropper is very nice as there is a mark on how big 1 dose is, and it doesn't drip when you take it in the hair. I do not give the product a full score on the star scale due to the price as it is quite pricey products, and I still cannot assess whether they are worth it in terms of purpose ☺️ I have also noticed that you cannot see a difference before 6-8 weeks, and one bottle does not last for that as the serum is to be used every night. The combination of the products feels very nice, and I will definitely come with an updated review after a while 😍 #lykoreview

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• Melinda

  3 days

  Rating: 4 out of 5

  Feels luxurious!

  The product smells fresh and feels luxurious in ombre colored glass with a dropper, it kind of makes you happy to see it in the bathroom cabinet 💖 I have used it in my evening routine and distributed 3-4 droppers over sections in my hair, then massaged it in lightly until I feel that the hair/scalp starts to absorb it. The hair gets a bit rough and strange, almost a little greasy, but it’s always gone when I wake up the next morning ☺️ The product is not particularly economical compared to the other products in the same series, and the price for this one is also a bit high unfortunately. My hair is thin Scandinavian hair that is very dry and damaged with a dry scalp. It’s hard to say if the serum has helped with hair loss after such a short time, but my scalp feels much better at least and it feels like it’s working. Overall, I think my hair feels incredibly much stronger and healthier after these 4 weeks as #lykotestpilot #kerastase I will definitely buy this again, as I think it has helped my scalp and I’m excited to see results over a longer period ⭐️

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• June

  3 days

  Rating: 4 out of 5

  Good first impression, hoping for strong results over time

  #LYKOTESTPILOT #Kerastase First of all, I want to say a thousand thanks to Lyko for the opportunity to test this product! That’s why I got to try the Kérastase Genesis Serum, and I was excited to see if it could make a difference. The product gives a luxurious first impression and feels professional both in appearance and use🤩 The first thing I noticed was the scent, which smells good but is quite strong right after application. Fortunately, it fades after a short time and leaves a mild, pleasant scent. I was positively surprised that my hair didn’t get greasy as long as I applied it as recommended. The serum is easy to distribute and absorbs quickly into the scalp without leaving product residue. My hair is medium thick, and I have a dry scalp with inactive psoriasis. Because of this, I occasionally experience more hair loss than normal, so I’m looking for products that can strengthen the scalp and help reduce hair loss. After about 3 weeks of use, it’s still too early to assess the long-term effect on hair loss, but so far I feel that the scalp feels calmer and less dry. The serum feels gentle and pleasant, and I’m excited to see the results over a longer period. A good and pleasant serum that gives a positive first experience. To conclude, the scent could have been a bit milder, and the effect on hair loss is hard to assess after just 3 weeks. But it looks promising so far!

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• Leona

  4 days

  Rating: 4 out of 5

  Nice serum

  #LYKOTESTPILOT #KERASTASE This serum was probably the product I was most excited to test, and it was an interesting experience to use it over time. I haven't experienced major issues with hair loss before, but like many others, I've noticed a bit of extra hair in the brush now and then – especially during periods of stress or seasonal changes. Therefore, it was exciting to try a serum that is supposed to strengthen the hair strands from the root and counteract hair loss. I applied the serum directly to the scalp with the dropper, especially at the temples and in front of the hairline. It became a regular evening routine, as it could look a bit greasy right after application – but it absorbed very quickly, and when I woke up the next morning, there was nothing greasy or heavy in my hair. Very practical! The scent is mild and discreet, which I really appreciate – especially because the product is meant to stay on the scalp. I have sensitive skin and scalp, but I haven't experienced any irritation, itching, or discomfort. It actually felt quite soothing to use the product – and my skin felt more balanced after a couple of weeks of use. After four weeks, it's hard to say anything for sure about hair loss, but my hair actually feels a bit stronger at the roots, and I notice less hair in the brush. Whether this is placebo or a real effect, I don't know – but it gives me motivation to continue using it over time! 💭 In summary: This is a serum I believe many can benefit from – especially if you have early signs of hair loss, a sensitive scalp, or just want to prevent it. The price is relatively high, but the experience and feeling of quality make up for it. For me, it has become a regular part of my evening routine 💧🌙

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• Lisa

  4 days

  Rating: 4 out of 5

  Worth the extra bucks

  The serum comes in a real, luxurious packaging, and I especially appreciate the pipette's marking for dosing – something I haven't seen in similar products. I have a lot of hair and lose quite a bit daily, so I've been curious to try this serum. Four weeks is, however, a pretty short testing period for a product like this, but I still feel like I've lost less hair during use – although it might just be placebo. Unlike other reviewers, I haven't reacted to the scent at all; it feels completely normal. It doesn't smell more or less than other hair products. The serum also absorbs quickly and doesn't make the scalp oily, which was my biggest concern. The only negative is that the product isn't particularly economical, and therefore runs out quickly – which makes it expensive in the long run. But finally, do you have problems with hair loss? Give this a chance – it could absolutely be worth the extra bucks! [hashtag] [hashtag]

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• Johanna B

  4 days

  Rating: 5 out of 5

  verified customer

  The result after a month!

  I have now tested this serum from #kerastase for 4 weeks and am at least very impressed. My hair type: 🫧Thin/fine hair - also known as Scandinavian hair 🫧 Color-treated hair (Balayage) 🫧 Oily scalp 🫧 Issues with hair loss & broken hair strands I have had a very tough hair journey where I have been plagued by a lot of hair loss at times. I have used this serum for a month and from barely being able to put my hair in a ponytail (because you can see my thin hairline). I actually see results already. I am really looking forward to continuing to use this product and see what it can do for my hair and hair loss. Very impressed! 🩷Extra plus for this product as it absolutely does not make the hair oily or leave a producty feeling on the scalp. It melts nicely into the hair. ✅ Economical formula ✅ Hair feels clean for a long time ✅ Incredibly nice and pleasant scent! #lykotestpilot

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• Maya

  4 days

  Rating: 5 out of 5

  Test Pilot

  For 4 weeks, I have been #lykotestpilot for #kerastase shampoo, conditioner, and serum in the #genesis line. I have used the serum on the nape of my neck where I have the most problems with weakened hair that breaks due to hair ties and necklaces. Here’s what I think: ✅Smells good (a bit strong but settles quickly) ✅Light consistency, never experienced my hair feeling greasy after application ✅Good pipette ✅An extra step in the routine that hardly takes any extra time ✅Hard to determine after a month if this really works, but I think it seems good as the nape of my neck feels and looks better (see picture) as it never usually grows more than in the "before" picture. Hair grows about 1cm a month and it looks like it has gotten a little longer when comparing before/after 🆗Glass packaging, feels luxurious but I'm afraid to take it anywhere or accidentally spill it ❌The product is not economical If you only use this on the nape, then it’s an okay price. But if you’ve looked at this type of product, you probably have more problems than mine and will need to use more product (as some others have written in their reviews). The sad thing about this product is that the more problems you have with hair loss, the more expensive it will be to use this product. I give it 5/5 for my purposes as the price becomes reasonable at 1 dose/pipette a day, I also like that it is so easy to add to my daily routine.

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• Azahara

  4 days

  Rating: 3 out of 5

  Feels good, but a bit heavy

  #lykotestpilot #kerastase This serum is definitely a product you need to use over a long time to see the effect. I could only test it for 2.5 weeks, so it's impossible to see a significant difference, so I'm so excited to continue using it to see 😊 The consistency is a bit thicker than I expected, almost like a light gel, but it's very easy to apply with the dropper. I used it on dry scalp, preferably in the evening, and massaged it in for a couple of minutes. It became a soothing routine for me 🧖 The scent is personally pleasant for me 🌸 ❌The only thing I would deduct a bit for is the price 💰 and that it can feel a bit heavy if you tend to have oily scalp. For me, it worked best when I used it 3 times a week, not daily, to avoid my hair feeling oily at the roots. ⚠️ I 100% recommend washing your hair with the shampoo from the same series 2 times and a bit more often if you experience a bit of oily hair. ⏱️ After 2.5 weeks, I've seen less hair in the brush by using the entire series. The scalp is calmer, and overall my hair looks healthier. A solid product, but just be a little conscious of the amount and frequency ⚖️

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• Karoline

  4 days

  Rating: 4 out of 5

  verified customer

  Serum

  🩷I have been so lucky to test products from #kérstase like #lykotestpilot. I have used Genesis Serum Anti Chute Fortifiant 90ml along with other products in the series for 3.5 weeks, and here are my experiences. 💇🏼‍♀️ My hair is blonde, bleached, and has gone through several salon treatments and some at-home treatments, which has made it worn and dry in the lengths. My first impression of the product is that it was incredibly nice to look at, I think all the products from kérastase are. 👍🏽 Easy to apply to the scalp 👍🏽 The pipette is large and easy to handle 👍🏽 Smells really good (smells a lot) 👍🏽 The scalp feels fresh after use 👎🏽 Not economical in use 👎🏽 My hair feels a bit weighed down by it, I don’t have much to compare with in terms of results, maybe it should be tested over a longer period. But, I still feel that my scalp has received good care during this time!✨ The scalp feels incredibly fresh when I apply it, but I do experience that my hair feels a bit weighed down by the product. Smells really good and a lot!

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• Malin H B

  4 days

  Rating: 4 out of 5

  verified customer

  Good results!!!🩷

  After a few months of use, it looks like a new amount of hair is growing out. Absolutely incredible results after regular use over a few months. However, I haven't used it as described; I've used one pipette spread over the entire scalp and massaged it in well every night. This has lasted me a long time and I am still getting results. This also means that the bottle lasts significantly longer. No reason to have to use 6 pipettes… sales trick

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