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4.1
Based on 41 reviews
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  • Most helpful positive

    Linn

    1 week

    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

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  • Isabella

    2 days
    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

    6 likes
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  • Emma-Linnéa

    2 days

    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!

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  • Maja

    4 days

    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
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  • Alice

    4 days

    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

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  • Maria

    4 days

    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
    237 views
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  • Saraoh

    4 days

    Fragrant, luxurious, and affordable!

    I have used the Sleek & Stay Leave-in Serum along with the Keratin Sleek Shampoo, Keratin Sleek Conditioner, and Keratin Sleek Hair Mask. I have never used serum before, and it felt like the finishing touch for my hair, though it was quite runny, but as I said, I have never used serum so I don't know how the consistency usually is. The shampoo lathered wonderfully, the conditioner was rich, and all the products smelled very good. It felt really nice to use these products together step by step. My hair was well taken care of, and the frizz mostly disappeared. I really think that Fructis has succeeded in creating an affordable product and is making great strides towards feeling luxurious, even the packaging feels more luxurious than usual. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    1 likes
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  • Lisa

    4 days

    Good and affordable

    I have used the Keratin Sleek Shampoo together with the Keratin Sleek Conditioner and the Keratin Sleek Hair Mask, and finished off with the Sleek & Stay Leave-in Serum. Good products that brighten up everyday life. Good lather, lovely scent, and leaves a nice and smooth feeling in the hair after use. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    2 likes
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  • Maria Therése

    4 days

    Pretty okay

    I have used the Keratin Sleek Shampoo along with the Keratin Sleek Conditioner and the Keratin Sleek Hair Mask, and finished off with the Sleek & Stay Leave-in Serum. It smells good and makes my thin long hair less frizzy with the help of the other products in the series. But what brings down the rating is that you have to use heat tools to activate the formula in the serum. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    2 likes
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  • Erika

    4 days

    Tested the products

    Now I have tested Garnier's hair products for a longer period. I have used shampoo, conditioner, hair mask, and Sleek & Stay Leave-in Serum. My hair has really stayed shiny and nice after using all the products. The best has been the serum, which has made my hair less frizzy. Just after one wash, my hair is shiny and stays that way for several days. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    2 likes
    154 views
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  • helen_perssson

    4 days

    Smells so good

    This smells so good. This made my hair very shiny. I haven't used this as much as the other products in the line since you have to use a flat iron to keep the shine longer. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

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GarnierFructisSleek & Stay Leave-in Serum 50 ml

41 reviews, 4.1 on average
135 kr
Free delivery option available from 200 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

Often bought together

244 kr
693,40 kr

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