K18 reviews and discussion

K18 Damage Shield Protective Conditioner leaves my hair feeling soft, smooth, and hydrated without weighing it down. I love that it helps protect against everyday damage while making my hair easier to detangle and manage. It pairs well with the K18 shampoo and is a great addition to a healthy hair care routine!

K18 Peptide Prep Detox Shampoo is great for giving my hair a deep clean and removing buildup without leaving it feeling overly dry. It leaves my scalp feeling refreshed and my hair feeling lighter and cleaner. Perfect for a reset between washes, especially if you use styling products regularly!

K18 Damage Shield Shampoo leaves my hair feeling clean, soft, and refreshed without stripping away moisture. I love that it helps protect against everyday damage while keeping my hair manageable and smooth. It lathers well, feels gentle, and pairs perfectly with other K18 products for healthier-looking hair!

K18 Leave-In Molecular Repair Hair Mask is worth the hype! It leaves my hair feeling softer, smoother, and healthier without weighing it down. I love that it helps repair damage while reducing frizz and improving manageability. A little goes a long way, making it a great addition to my hair care routine!

Recently picked up two K18 products: the Leave-In Molecular Repair Hair Mask and the HeatBounce Conditioning Heat Protectant. The standout for me is the mask, which really helps to manage the inevitable frizzy texture of my natural hair. It helps when I use it to get a much smoother texture and a nice smell as well.

I LOVE this hair oil. It's lightweight and leaves my hair looking smoother and shinier without feeling greasy or weighed down. A few drops are enough to help tame frizz, smooth flyaways, and add a healthy-looking finish. I also noticed that my hair felt softer and looked less dry after regular use. The formula absorbs quickly, so it doesn't leave behind an oily residue, and a little goes a long way. The only negative I will say that it smells like chlorine which isn't great, and there are a lot of unnecessary perfuming ingredients in it.

The K18 AirWash is one of the more unique dry shampoos I've tried, since it's not dry at all. It actually comes out in a liquid spray instead of the usual powdery spritz other dry shampoos have. I liked that it didn't leave a noticeable white cast, which made it easy to use without extra brushing or blending. The scent is fresh but not overwhelming. But I didn't feel like it quite matched the efficacy of other dry shampoos on the market.

My hair stylist recommended this product after an intense bleaching session. My hair does feel smoother after use but at this price point I was expecting something worth a miracle. I’ll use until it runs out but will wait to repurchase until I stop using for awhile and feel the effects.

This got me hooked! I couldn’t understand what was so special but I totally get it now My hair has never felt better

At first, I was like WOW, I think K18 air wash is changing my life. But after almost a year of use I now think it might just be only good at best. While this *is* the greatest dry shampoo I have ever used, it still leaves a starchy residue behind and doesn't really extend hair past 1 day. I have a fairly oily scalp with fine hair (but a lot of it) I'm also super prone to dandruff in winter as my scalp is also DRY (annoying) This is maybe the only dry shampoo that actually absorbs oil and makes hair look freshly washed. Smells great, I love the application. I love the rest of the products / brand, I just wished it lasted longer and didn't make my scalp feel gross after! Also deducting a star due to price point/ bottle clogging after a few months of use. It's almost perfect!

As a fake blonde, this is a must have. My hairstylist uses this on me all the time, and was the one who told me to purchase it myself. She says she can tell the difference in my hair when I do use it regularly vs when I don't. Most of the time I use it as conditioner. Pretty expensive for a small bottle, but it works.

I truly believe this is the reason my hair has increased its thickness almost double in the past two years (of using one time weekly after washing). Okay I have other favorite products that might be partially the cause of the increased health of my hair but I definitely owe K18 the biggest thanks.

I loooveee k18!! I hate how much it is and how much my hair loves it. The hair oil has become a holy grail for my fine hair, it detangles and protects my hair so well. The repair mask is really nice as well.

So lightweight but makes a big difference in frizz and shine. It absorbs fast and doesn’t leave that coated feeling. I use a small amount on damp or dry hair and notice an immediate softness. A small amount goes a long way too.

Peptide prep detox shampoo made my hair feel clean. I’m going to take a photo of the sample from my drawer instead of messing with the order of shampoos in the shower. It’s easy to dispense which is important. But cleans well.

The only leave in conditioner I use... after trying several, i will declare this one the winner. a girlfriend told me about it, and thats what we love about great girlfriends, they share what works. What i love about it; it does not weigh down my very thin / fine hair. It helps maintain my natural wave when I let my hair air dry. A little bit, goes a long way. The only reason this was not a perfect 5 rating is due to the price. BUT like i said, a little goes a long way. I use once a week with the Ouai detox shampoo.

I was looking for an alternative to Olaplex and heard about K18 from.... Kim Kardashian. While I am not proud of the source, I am super happy with the product! It's like miracle goop for your hair! It softens and helps to defrizz and make my hair feel so much healthier. I use the Peptide prep shampoo, the leave in hair mask and the hair oil.

Worth every penny. Two little pumps and my hair feels stronger after one use. Not a daily product but a magical one. Wish I had started using this sooner! For reference I have very curly hair that can be knotty after a shower so I brush it before the shower to make applying this easier.

The K18 Leave-In Molecular Repair Hair Mask is a standout in the “hair repair” category. It leverages a genuinely different technology (peptide-based, inside-the-strand repair) rather than just smoothing or coating hair. For the right hair conditions (damage, breakage, chemical/heat stress), it delivers visible and lasting improvement. If your hair is healthy and you just want a nice mask, you might prefer to spend elsewhere. But if you’ve been lamenting damaged ends, limp texture or persistent frizz, this product is absolutely worth the investment. Make sure you activate the product by rubbing it between your hands until it becomes opaque!

The AirWash is magic! I have no idea how it works so well but whether you’re trying to make it to day four before washing your hair or you’re sweaty and gross from a workout, spray this stuff on and add a little heat and bam, your hair looks like a million bucks. I have fine hair, with some wave, and a lot of it.