Is K18 Really A Miracle Hair Repairer?

Is K18 really worth the hype? Many celebrities, their stylists, and beauty industry editors say YES YES YES! You may have seen the award-winning leave-in mask pop up on your TikTok or even in magazines like Vogue (the one with Selena Gomez on the cover!). 

K18 actually been making waves in the beauty community since it launched in 2020 and has been endorsed by some of the best colorists and stylists in the industry. So why is this product being held up like the holy grail of hair repair?

Unlike traditional hair masks which simply hydrate and smooth the outside of your hair to only appear healthier, the K18 Leave-In Molecular Repair Hair Mask goes in on a deeper level, repairing damage from the inside out. 

“K18 travels into the innermost layers of hair and can renew hair’s core strength elasticity to bring hair back to its near-original, youthful state,” says Yusef, celebrity hairstylist and K18 partner. “K18 does everything bond builders do, and goes a step further by also repairing polypeptide chain breaks on the y-axis. Hair both looks and feels like new.” 

If you are looking to reverse damage from chemical services, heat styling, and bleaching then K18 is for you!

Award-Winning & Celebrity Endorsed

The K18 Leave-In Molecular Repair Hair Mask is an award-winning haircare product—it’s been compared to (and is purportedly more effective than) the industry standard, Olaplex’s No. 8 hair mask. K18’s hair mask has even been hailed as a replacement for conditioner and have celebrities like Khloe Kardashian and Hailey Bieber singing its praises.

"My favorite hair product right now is this product called K18," Hailey Bieber shared with Refinery29. "It's so good; I use that all over my hair every time I get out of the shower."

What the Pros Think

As is the case with so many of the best products, K18 was something of an industry secret before making a splash with consumers. Douglas Cornwall, a master colorist, says, “…if you color treat your hair, K18 is a must.” Ask your stylist for the K18 Mist and In-Salon Treatment at your next visit!

Byrdie editor Amanda Ross claims “The K18 Mask is the most effective hair mask I've ever used…Around the third application, you notice the biggest difference in touch-ability…If there were ever an excuse to splash out, [this] science-backed (and pro-loved) treatment definitely seems like one to take.”  

Easy as 1, 2, 3….4 Minutes!

Applying the K18 Leave-In Molecular repair hair mask is a little different than what you might be used to. 

“We tell our clients to shampoo their hair, but do not condition,” says Mark DeBolt, Celebrity colorist and co-owner of New York’s Mark Ryan Salon. 

“After getting out of the shower, towel-dry hair well. Apply two to three pumps onto your palms and rub together to distribute evenly over hands. Begin application of the mask first onto the most porous and most sensitized parts of hair: the midlengths and ends. Then, using what little product is remaining on your hands, apply closer to the root. Use either a wide-tooth comb or a detangling brush to brush hair out and distribute product more evenly.” 

Be sure to let it sit for four minutes to activate, after which you can add other styling products or style with heat as usual. The mask quickly absorbs into your hair with minimal residue and is very lightweight—more so than a traditional conditioner or leave-in. You can almost feel your hair transforming under your fingers.

The brand recommends you use this leave in every wash for 4 consecutive washes, then about once a week afterwards. Your hair will be noticeably softer, smoother and healthier. Your waves may become more defined and bouncy with less frizz and breakage.

We aren’t saying you will feel like a Disney princess, but we are also not saying you won’t. 

Try it for yourself and let us know what you think by leaving us a review!

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