I feel like it didn't leave my hair the way I expected, but I'm giving it the benefit of the doubt for next time.

Curly hair and frizzy , love love love it . Made me crazy hair silky smooth .

This stuff made my hair feel sooooo good! It cut drying time way down and definitely helped with the frizz. I have course and frizzy hair that hates protein heavy products but this is perfect. Going to try the rest of the line.

This smelled like straight chemical, like I put nair on my head. Immediately after I put it on my hair, I had to wash it off due to the smell making me feel sick. Do not recommend, not worth the smell.

I have thick curly hair ..i have tried this treatment today and I need to say this is absolutely WORTH IT .. I was able to blow dry my hair at home and I'm shocked that I was able to do it on my own

I used this on wash day and I'm so glad I decided to try it. I did a double wash so my hair was salon clean. Put this on instead of my usual Kerrastase conditioner. It smelled like perm solution. I left it on for 10 min, rinsed and wrapped my hair. applied the k18 oil and the oribe supershine as usual2. Blow dried as usual but when I was done, I had about 90% less flyaways. the only change I made was this product.

Exceeded my expectations which hardly ever happens with hair products. I can’t say how long each treatment lasts because it has only been a couple of days but it works like a mini keratin treatment. I LOVE it!

Not for Houston weather. I followed the instructions step by step and it doesn’t work. My hair is full of frizz as always. Don’t waste your time and money.

Lately I’ve been on a roll with L’Oréal line … I already own 4 lines of them and love them all! I see a HIGR change and my hair is so much hydrated .. Left it for the 15min used my dyson then straighter only on roots and little lower .. love this !

I am absolutely thrilled with the L'Oréal Professionnel Keratin Alpha Sleek Smooth Transformer! As someone who has constantly battled with frizzy and unmanageable hair, especially in humid climates, finding a product that truly lives up to its claims has always been a challenge. This treatment, however, has been a complete game-changer for my hair care routine. From the very first application, I noticed an incredible transformation. My hair, which typically tends to rebel and puff up, felt incredibly soft, silky, and, most importantly, unbelievably smooth. What truly sets the Keratin Alpha Sleek apart is its remarkable ability to deliver professional-level smoothing right in the comfort of my own home. I was skeptical at first, having tried numerous "smoothing" treatments that offered temporary relief at best. But this product provides genuine, long-lasting frizz and volume control that has genuinely surprised and delighted me. My hair not only looks healthier and more polished, but it also feels so much stronger and more resilient. The formula, enriched with keratin sleeker and amino-acid chain, seems to work deep within the hair shaft, reinforcing its structure and creating a protective barrier against humidity. This means my sleek look lasts for days, even after washing, which is an absolute luxury I haven't experienced before. I also appreciate how easy it is to incorporate into my routine. It doesn't weigh my hair down or leave any greasy residue, which has been a problem with other intensive treatments. Instead, my hair feels light, bouncy, and full of natural movement, but without the unwanted frizz. Styling my hair has become significantly easier and quicker, saving me precious time each morning. I can confidently step out knowing my hair will maintain its smooth, sleek appearance throughout the day, regardless of the weather. This product has truly boosted my confidence and simplified my hair care regimen. If you're searching for a solution to combat frizz