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@makeupbycheryl reviewing K18 Leave-In Molecular Repair Hair Mask at 15:41 in a YouTube Shorts videoLeave-In Molecular Repair Hair Mask"If you bleach your hair at all, you need to incorporate this into your routine."$75.00@sincerelymissash reviewing K18 Heat Bounce Conditioning Heat Protectant at 31:34 in a YouTube Shorts videoHeatBounce Leave-In Conditioning Heat Protectant Spray"This will protect your hair up to 450° Fahrenheit with heat styling tools."$48.00@thegarsowtwins reviewing K18 Air Wash Dry Shampoo at 01:26 in a YouTube Shorts videoAirWash Dry Shampoo"It has like a shake well and so you're supposed to shake it up and it goes on wet but then it dries to almost like a powder finish like a traditional dry shampoo but because it goes on wet you can really like get it in your roots."$48.00@thecleanbeautycode reviewing K18 Hair Repair Oil at 09:41 in a YouTube Shorts videoMolecular Repair Hair Oil"I love this. Just two drops basically."$65.00@abbeyyung reviewing K18 AstroLift Reparative Volume Spray at 03:38 in a YouTube Shorts videoAstroLift Reparative Volume Spray"This is also a weightless spray and really like out of all the volumizing products that I enjoy and recommend the most lightweight possible option."$46.00

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Leave-In Molecular Repair Hair Mask
4.9Leave-In Molecular Repair Hair Mask
MakeupByCherylMakeupByCheryl190K subscribers
4.9Leave-In Molecular Repair Hair Mask
Sincerely Miss AshSincerely Miss Ash194K subscribers
4.9Leave-In Molecular Repair Hair Mask
  • “This mask has patented technology that no other hair product has”0:13–0:18
  • “I truly, truly think this is unlike any other hair products out there”0:26–0:29
  • “Notice a lot less breakage and damage”0:29–0:31
  • “I've actually emptied so many of these”0:31–0:33
  • “Shampoo, rinse my shampoo. You don't have to do conditioner. Put this on, leave it for four minutes, and then you're done”0:33–0:35
AlxandraAlxandra224K subscribers
4.8Leave-In Molecular Repair Hair Mask
  • “Oh my god this is such a big buy why? Because like I was mentioning that my hair was facing breakage and this really helps strengthen the bonds of your hair”
  • “It really makes a world of the difference in making your hair more manageable making it frizz free and kind of strengthening it”
  • “This is the kind of product that your hair can get addicted to”
  • “I have like today only in fact bought another one of this because it really makes a difference especially when you styling your hair often this really helps keep it going strong”
  • “I prefer this much more than the Olaplex bond repair”
  • Source: 2025 product empties: buy or bye? - Dec 13, 2025
Aashi AdaniAashi Adani299K subscribers
4.5Leave-In Molecular Repair Hair Mask
Dr. Sam EllisDr. Sam Ellis835K subscribers
4.2Leave-In Molecular Repair Hair Mask
  • “I think this might be my third one that I've finished and I think this is such an incredible product”11:44–11:51
  • “It really does help the like strength and overall quality of your hair”11:51–11:59
  • “When I had blonde hair this saved my hair. It made my hair so much more moisturized and way less brittle”11:57–12:06
  • “A little goes a long way, so this lasts quite a while”12:13–12:18
  • “This is spendy, but I feel like the price per use isn't quite worth it because it's still quite expensive, but it's better than it could be, I guess”12:15–12:23
  • “I think it did a really good job at really keeping my hair healthy when I needed that desperately”12:32–12:36
  • “This is something I would recommend”12:40–12:44
  • “I don't know if I would repurchase... I do think that this has a punchier result than the Living Proof one”12:43–12:47
  • Source: Beauty and skincare empties with repurchase thoughts - May 7, 2026
Rainier CramerRainier Cramer19K subscribers
HeatBounce Leave-In Conditioning Heat Protectant Spray
4.9HeatBounce Leave-In Conditioning Heat Protectant Spray
Sincerely Miss AshSincerely Miss Ash194K subscribers
4.8HeatBounce Leave-In Conditioning Heat Protectant Spray
  • “Another hair product that really just impressed me and that I have not been able to stop using ever since I purchased it”15:52–15:59
  • “When I saw this product at Sephora, it kind of sounded like the perfect product for me because it was a heat protectant and it also was supposed to condition your hair as well”16:12–16:17
  • “I got to say, this really does deliver”16:23–16:27
  • “I put this in my wet hair before blow drying it. And I also put it in my dry hair if I'm ever doing any type of dry heat styling. And it will always make my hair feel and look super smooth without weighing it down or feeling like there's a really heavy product inside of it”16:25–16:31
  • “I just find that my hair looks really nice and smooth and I do notice quite a big difference when I use this versus when I don't use this, which is always my way of seeing if a product is any good”16:41–16:49
  • Source: Beauty products I loved the most in 2025 - Jan 30, 2026
Jamie PaigeJamie Paige491K subscribers
4.6HeatBounce Leave-In Conditioning Heat Protectant Spray
  • “Not only does she help protect the outside of your hair, it literally works from protecting the inside of the hair”0:40–0:42
  • “It delivers heat protection so deep, unlike any other heat protectant”0:45–0:47
AlxandraAlxandra224K subscribers
AirWash Dry Shampoo
4.9AirWash Dry Shampoo
  • “It has like a shake well and so you're supposed to shake it up and it goes on wet but then it dries to almost like a powder finish like a traditional dry shampoo but because it goes on wet you can really like get it in your roots”1:15–1:20
  • “I usually spray it on and then kind of like massage it into my roots and then once it's dry like brush it and it adds volume and I even have done this like the day before I know my hair is going to be oily to prevent it from getting oily and that has helped so much”1:26–1:34
  • “I might just like continue using it because it is so good. It's the best”1:50–1:57
  • “We used to use powder dry shampoo exclusively, but this just gets your head cleaner because it goes on wet”1:55–2:01
  • “It almost like really gets rid of all oil on the skin”2:01–2:06
  • “You can really almost use it as like getting volume, too, because it really is strong”2:06–2:10
  • Source: January Favorites 2026 - Feb 2, 2026
TheGarsowTwinsTheGarsowTwins15K subscribers
4.9AirWash Dry Shampoo
  • “This is the best one that exists”
  • “It is unlike dry shampoo because it is not a powder. It's not an aerosol. It comes off kind of wet”1:10–1:16
  • “There's no white cast at all, not even when you first spray it or after or at any point”1:19–1:22
  • “It says on the bottle that it specifically will not disrupt your hairstyle and it doesn't”1:39–1:44
  • “It soaks up the oil, leaves no white cast. I can get so many more days out of my hair than I've ever been able to”1:56–2:01
  • “This has swept me off my feet”2:03–2:06
  • “It deserves to be the first thing mentioned in this video because it is that good”2:05–2:07
  • “This is expensive and I'm going to be recommending a lot of affordable things today. It pains me to pay this much for this”
  • Source: My all-time favorite hair care products I repurchase - Apr 20, 2026
Jessica BraunJessica Braun663K subscribers
4.8AirWash Dry Shampoo
Abbey YungAbbey Yung827K subscribers
4.8AirWash Dry Shampoo
  • “I can literally take a greased down hairstyle, spritz in the K18, and you don't need a lot, and the hair really does look washed”2:39–2:46
  • “Definitely of all the dry shampoos I've ever tried, this one makes oiliness disappear the most effectively, and you don't need a ton of product”2:59–3:04
  • “If I had to rate this on a scale of 1 to 10, I would give it like a 9.5, which is very generous for me because I'm really picky about things”3:11–3:18
  • “In terms of what it actually does for your hair, 10 out of 10”
  • “When you spray it, it can leave a little bit of white residue. So if you're wearing dark clothing or you have dark countertops, you will see a little bit of that fall out”3:22–3:27
  • Source: Most repurchased haircare products as a hair loss expert - May 1, 2026
Dr. Sam EllisDr. Sam Ellis835K subscribers
4.5AirWash Dry Shampoo
  • “I love this product. This is like one of my favorite dry shampoos”0:24–0:32
  • “This dispenses water. So there is no white cast ever whatsoever. And it's very very lightweight”0:33–0:40
  • “It's very nice, blendable, and instantly it's going to give me so much volume”1:07–1:14
  • “You just massage it in and the water kind of dries up and it makes your hair oil free”1:14–1:20
  • “The only thing I don't like about this dry shampoo is that it will make your hair feel heavy and it will feel like you have product in tomorrow. So tomorrow by hooker by crook I have to wash my hair”1:17–1:30
  • “See the volume it gives me. Oh my god. Just look at this. Crazy”1:48–1:53
  • Source: Battle of top 10 dry shampoos in India - Nov 29, 2025
Aashi AdaniAashi Adani299K subscribers
Molecular Repair Hair Oil
AstroLift Reparative Volume Spray
4.6AstroLift Reparative Volume Spray
Abbey YungAbbey Yung827K subscribers
Brand note

K18 is the brand that brought patented peptide repair technology to hair, and its Leave-In Molecular Repair Hair Mask is the anchor — a bond-repair treatment that creators say has no direct competitor at the drugstore. The line also includes a lightweight hair oil that doesn't weigh hair down and a heat protectant that works internally. If you're looking for deep repair rather than surface-level conditioning, K18 is worth the investment.

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