User images

Reviews & comments

4.1
Based on 51 reviews
  • 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
    1998 views
    to leave a comment
  • Most helpful negative

    Elina Elisabeth

    3 weeks

    Easily too much product

    Garnier's keratin sleek kit is a kit meant for dry and frizzy hair. The products were not perfect for my hair. I thought the products made my hair shinier, but I felt that the hair didn't get enough moisture. It works, it does its job, but not for my hair as I have a hard time saying if it really reduced the frizz since my hair is very frizzy. This kit gives okay results but not perfect ones. If I had to choose one product from these four, I would choose the hair mask as it rehydrated the ends of the hair well. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    2 likes
    582 views
    to leave a comment

  • Jasmin

    1 week

    Awesome oil!

    Wonderful hair oil. A bit runny in consistency but doesn't weigh down the hair at all like many other oils. Smells really good and is nice to use as a refreshment between washes. My very frizzy hair became soft and smooth. A big bonus was really that the oil didn't weigh down the hair; instead, I got a nice shine without it feeling oily. I appreciate that it also has heat protection, perfect for me as I often use a flat iron or blow-dry my hair. In summary, this hair oil is a real lifesaver in need for soft and shiny hair! The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    1 likes
    184 views
    to leave a comment

  • Sara W

    2 weeks

    Great serum that removes frizz!

    I have tested the entire series. I like the scent and consistency. The product lasts a long time. My hair feels clean and soft. Shampoo: Smells good, lathers a lot. Lasts a long time. I have dreads and want my hair to be dry. Feels amazing for my hair. Conditioner: Good consistency, moisturizes well. Lasts a long time. Mask: my favorite. I use it on the ends and my hair becomes moist/just the right amount of shiny. Serum: smells clean and good, I only use it on the ends. Keeps frizz away all day. I like the entire series. Feels like a good everyday product. Nice packaging, easy to use. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    256 views
    to leave a comment

  • Maya Andersson

    3 weeks

    Works surely well if you use heat on the hair

    I experience that the serum smelled good. I never use heat on my hair, so I find it hard to judge it completely accurately. But in my opinion, my hair became a different consistency than I like.,( in connection with the use of all the ”keratin sleek” products) I found that I needed to wash my hair an extra time a week after using these products. The review was conducted on behalf of Smartson - the test pilot was allowed to try the product for free.

    Translated from swedish

    263 views
    to leave a comment

  • Cicci

    1 month

    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

    337 views
    to leave a comment

  • Madeleine

    1 month

    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

    388 views
    to leave a comment

  • Jessica

    1 month

    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
    577 views
    to leave a comment

  • Jannicke

    1 month

    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
    494 views
    to leave a comment

  • Carolina

    1 month

    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
    874 views

    • Amanda

      Customer service at Lyko
      1 month
      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! 🌸

    to leave a comment

  • Anita

    1 month

    Good

    A very good product

    Translated from swedish

    274 views
    to leave a comment

  • Isabella

    1 month
    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
    840 views
    to leave a comment

GarnierFructisSleek & Stay Leave-in Serum 50 ml

135 kr
Free delivery option available from 200 kr, can be sent immediately

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

470 kr
388,05 kr

Recommended products

Customer service