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4.1
Based on 47 reviews
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  • Most helpful positive

    Linn

    1 month

    Smells wonderful

    A really good serum that gives the hair a nice shine and keeps it frizz-free all day. It feels light in the hair and makes it soft and manageable without becoming greasy. Extra plus for also providing heat protection during styling! A real favorite for anyone wanting smooth and shiny hair. It smells heavenly, though I wish the scent would linger a bit in the hair after styling. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    9 likes
    1429 views
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  • Most helpful negative

    Carolina

    1 week

    Excessive for my hair

    I have been able to test Keratin Sleek products for a few weeks. In the before picture, the hair hasn't been washed for several days, and the after picture shows results after treatment with both Keratin Sleek Conditioner, Keratin Sleek Shampoo, Keratin Sleek Hair Mask, and Sleek & Stay Leave-in Serum. The products smell good and fruity like Fructis often does, and my hair became soft and nice, so I can recommend the products. Above all, the shampoo which almost made my hair feel like I already had conditioner in it. Very soft and easy to brush. The serum neither helped nor harmed my hair, but I don't have a good grasp on how to exactly use serum, so that could be a reason. The review was conducted on behalf of Smartson - the test pilot was able to try the product for free.

    Translated from swedish

    2 likes
    511 views

    • Amanda

      Customer service at Lyko
      1 week
      Hey Carolina! 🤗 So fun that you tried the whole series! 😍 And thank you for taking the time to share your experience! So lovely to hear that you liked the feeling in your hair, especially after the shampoo and conditioner! When it comes to the Sleek & Stay Leave-in Serum, it’s meant to be left in the hair. Just take a small amount (about the size of a pea), rub it in your hands, and pull it through the lengths and ends, either on towel-dried or dry hair 🤍 Personally, I find that they work better with leave-in products on damp hair, but it’s a bit of a matter of taste 😊 If you want extra shine and a really smooth finish, you can blow-dry your hair and then go over it with a flat iron, it helps to lock in that nice feeling! 💛 A little tip is also to avoid applying the serum too close to the scalp, so the hair doesn’t feel heavy. Have a really lovely day! 🌸

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  • Cicci

    5 days

    Sleek & Stay Leave-in Serum

    Easy packaging to use, easy to apply the product in the hair, no mess left on the hands. The hair feels very smooth and has no tangles. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    126 views
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  • Madeleine

    1 week

    Anti-frizz

    Perfect product for my hair that often gets static. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    208 views
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  • Jessica

    1 week

    Easy to apply

    Step 1, the shampoo lathers well which makes it feel like it cleans well. Step 2, the conditioner makes the hair easy to comb and feels moisturizing. Step 3, the hair mask makes the hair even more moisturized and makes it very easy to comb out. Step 4, the serum is easy to apply and feels very light without weighing it down. In summary, these are affordable products that do their job! Reviews were conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    2 likes
    370 views
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  • Jannicke

    1 week

    Effect but hard to apply

    This product is way too runny for my taste. It makes it hard to use on long and thick hair. The upside is that the hair doesn't get weighed down or greasy. I've tried both with and without a subsequent flat iron and notice no major difference. The effect is comparable and the effect is actually quite good. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    1 likes
    337 views
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  • Anita

    1 week

    Good

    A very good product

    Translated from swedish

    178 views
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  • Isabella

    2 weeks
    verified customer

    Happy Surprise!

    This is a leave-in serum that you apply to towel-dried hair, then you blow-dry the hair and finish with a flat iron. I believe it requires heat to activate the product. I used this after the hair mask from the same series, and I was completely overwhelmed by the result! My hair got that silky smooth feeling where it falls like a piece of silky fabric. It's unusual, as my hair is usually quite coarse and frizzy. My hair also has a faint fruity scent that I absolutely don't mind. My bathroom is full of products from Kérastase, Kevin Murphy, and other luxury brands, but I have to say: I haven't been this satisfied with a product in a long time... I really recommend this to anyone who wants really smooth and soft hair at a very affordable price. #lykoreview

    Translated from swedish

    7 likes
    709 views
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  • Emma-Linnéa

    2 weeks

    Incredibly good!

    Got to test it via smartson. Incredibly good! Used this after washing and conditioning before I dry my hair. It becomes as smooth and soft as possible! It smells absolutely amazing too! Highly recommended and I will definitely buy again!

    Translated from swedish

    287 views
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  • Maja

    2 weeks

    Magical serum

    For a little over two weeks, I have tested shampoo, conditioner, hair mask, and serum from Garnier Fructis Keratin Sleek, and here are my thoughts on the products. The products smell good, a bit fruity, but the scent doesn't last particularly long. During these two weeks, I have used the products every time I washed my hair, about every other to every third day. I haven't noticed any huge difference in my frizz, but it has probably gotten a little better. My hair also feels softer and more moisturized. The shampoo lathers well and doesn't feel drying, which is important to me. The conditioner and hair mask moisturize and detangle the hair, and it takes quite a little product even though I have long hair. Overall, I would say that these three products are okay, they don't give a wow effect but are also not bad, I would absolutely continue to use them. My absolute favorite product from this series that I will continue to buy over and over again is the serum. The consistency is very watery, which makes it easy to run out of your hand, but the consistency is also one of the reasons I love the product. I don't have to be afraid that my hair will get greasy even if I use a lot of product because it is so light. At the same time, it makes the hair incredibly soft and easy to manage. According to the product description, you should blow-dry the hair dry and then straighten it to preserve shine, I have done this during the testing period, but I have also tested letting my hair air dry once, and I notice no greater difference compared to blow-drying and straightening the hair. Overall, I would say that even though these products haven't been a miracle for my hair, they are still good and especially affordable hair care products that I can absolutely recommend. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    1 likes
    361 views
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  • Alice

    2 weeks

    Light oil for you with thinner/oily hair that uses a flat iron

    Is a light, almost watery oil that suits you with thin hair that can easily look oily. The oil helps to keep the hair ends together and fights frizz. Note: Be aware that the serum will only start to work after using heat tools. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    209 views
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  • Maria

    2 weeks

    The best product in the series

    My favorite in this series! It smells really good and the scent lasts. Gives shine and two pumps are enough. Makes the hair easier to brush. The fact that it has heat protection gives even more plus points. Try it if you want shiny, smooth, and glossy hair. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    2 likes
    390 views
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GarnierFructisSleek & Stay Leave-in Serum 50 ml

47 reviews, 4.1 on average
59,46 kr.
Ord. price 84,95 kr.30
Offer valid through
Free delivery option available from 300 kr., can be sent immediately
Description
Ingredients

Garnier Fructis Sleek & Stay Leave-in Serum is a hair serum for dry and frizzy hair. The formula adds radiant and long-lasting shine while protecting hair from styling tools (up to 230 degrees*) and frizz. Enriched with 5% alpha-silane which contributes to the longevity of the results. The formula is activated by using styling tools with results lasting even in high humidity*. Fructis Sleek & Stay hair serum is step 4 in a complete routine that provides a smooth and shiny hair result that lasts up to 10 days and through 5 washes****.

- Heat protection up to 230 degrees*
- Withstands up to 80% humidity*
- Alpha-silane technology that coats the hair strand with a water-resistant and heat-protective film
- Provides a smooth and shiny result that lasts for 10 days****
- Enriched with smoothing keratin complex and argan oil
- Counteracts frizz and provides 93% more shine**
- Follow the hair care routine from Keratin Sleek for a lasting*** smooth and shiny result.
- Do not rinse

*Instrumental test
**Instrumental test after using shampoo + conditioner + mask as leave-on, or after shampoo + conditioner + hair serum.
***Instrumental test after one application of shampoo and conditioner in the same franchise
****After using serum in the same franchise

Use:
After completing steps 1-3: Shake the bottle and distribute the serum evenly through damp hair, one pump at a time. Do not rinse. Blow-dry your hair and then use a flat iron to maintain long-lasting shine. Rinse immediately with plenty of water if contact with eyes. NOTE: Do not unscrew the pump cap.

50 ml

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