Great product
I love Ola Plex hair serum. It protects my hair from the harshness of chlorine in the swimming pool, makes my hair, manageable, soft and shiny. Read more













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Rated 4.6/5 across 6,706 reviews — highly regarded by customers.
Customers find the hair serum effective at smoothing and reducing frizz, making it feel silky without weighing it down.
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I love Ola Plex hair serum. It protects my hair from the harshness of chlorine in the swimming pool, makes my hair, manageable, soft and shiny. Read more
If your hair is feeling dull, frizzy, or vulnerable to heat and pollution, Olaplex No. 9 might be the rescue remedy you’ve been waiting for. This leave-in serum is designed to protect, smooth, and revive your strands — and it’s earned rave reviews across the board. 🌟 What Makes It Special: • Triple-Action Formula: Combines Olaplex’s patented bond-building technology with red algae extract to strengthen hair, shield it from environmental damage, and boost shine. • Heat & Pollution Protection: Guards against heat styling up to 450°F and defends hair from pollutants and UV rays for up to 48 hours. • Lightweight & Non-Greasy: Unlike many serums, it doesn’t weigh hair down or leave it oily — even on fine strands. • Versatile Use: Works beautifully whether you air dry, blow dry, or style with hot tools. Some users even apply it to dry hair between washes for added smoothness. Read more

I use this product almost every time after I towel dry my hair. It has become an essential part of my hair care routine, providing me with the perfect balance of moisture and hold. If I’m planning on wearing my curls, which are of the 2C-3A hair type, I’ll pair this product with the ouai curl cream. Together, they leave my hair so smooth and frizz-free, enhancing the natural beauty of my curls. The combination is incredibly effective, and I often receive compliments on how defined and healthy my curls look. Sometimes, I’ll just use this product without the curl cream, and it works really well if I’m just straightening my hair as well. The product has a unique ability to smooth out my hair, reducing the need for excessive heat styling. It provides a sleek finish that lasts throughout the day, keeping my hair looking fresh and polished. Overall, it’s a very versatile product, and it’s a must-have in all of my hair routines. Whether I’m curling or straightening, it consistently delivers great results. I highly recommend this product to anyone looking to improve the quality and manageability of their hair. It’s a game-changer and has definitely earned its place in my beauty arsenal. Read more
This is the holy grail of hair products. I am in my late 40s and have thin, dry, color damaged hair. My hair has been frizzy and I could only wear a ponytail and even in that it would become a tangled rat mess. I have tried 100s of dollars in products from Keratin hair treatments, Aveda products, Nexus, Pantene, Its a 10, blowouts EVERYTHING under the sun and nothing was working. I was ready to shave my head and start over. Then I found this and read soooo many reviews and said shoot all I have to lose is more money. So for my fine, thin, color/highlighted damaged hair I got the 4/5 shampoo and conditioner, weightless nourishing mask,#3 Bond building hair and the #9 Bond Protector. My hair is now SOOOFFFTTT, not frizzy even when it is humid out (I live in the desert) so not many humid days until recently. This is all in just 3 days!!! Day one I used the Shampoo and Hair mask with already noticeable difference, Day 2 and 3 I used only the shampoo and conditioner. I started with the small bottles at $30 each and I am so far very pleased and plan on once I run out getting the larger bottles. I will tell you that you need a very very small amount of shampoo, it goes a LONG ways. The conditioner maybe a nickel size amount as it also goes a long ways. When I first used this and was done rinsing my hair, it did not feel soft and I was thinking okay I am going to not have fun brushing my wet hair and it was going to be a waste of money. Boy I was fooled. even though my hair did not feel soft and slick after conditioning, the wet brush I use as always just glided thru my hair with such ease. I was like oh okay and then once I dried it I was completely shocked at the difference the first wash alone had made. There were no tangles and the entire day my hair has been smooth, soft and manageable! I say take your chance and get this product, I hope you are as happy as I am with this. I plan on tossing every other hair product away now that this is the only thing that genuinely works for my hair in a way that I have never experienced with a hair product before. Read more




I use heat tools often , and this serum has been a game- changer. It protects, tames frizz, and adds shine without making my hair greasy . The scent is nice too. Only reason i give 4 stars is the price - but the quality justifies it! Read more

“I’ve been using this Olaplex nourishing serum for a few weeks now, and I’m really impressed. My hair feels softer, smoother and much more manageable. It reduced frizz and added natural shine without weighing my hair down or making it greasy. The scent is pleasant and subtle, and a little amount goes a long way. Overall excellent product. I’ll definitely keep using it Read more
I have really thin fine hair and this stuff makes it feel silky without weighing it down. Big recommend Read more
It was great defrizzes hair Read more
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