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K18 Biomimetic Hairscience
Get hair like new* with K18's biology-first haircare, designed to make the impossible possible.
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Reviews
Recent Reviews
lkarch
Verified Buyer
5
2/22/2026
Best Hair Oil I’ve Ever Used — and I’ve Tried Ever
I have naturally curly hair that’s been seriously damaged from years of color and heat styling, so I’ve tried everything — luxury oils, drugstore oils, masks, serums… you name it. This is hands down the BEST hair oil I’ve ever used. It instantly smooths frizz without weighing my hair down, adds real shine (not greasy shine), and somehow makes my ends look healthier after just one use. My hair feels softer, looks smoother, and actually behaves — even when I air dry. The biggest difference for me? It makes damaged, over-processed hair look polished instead of fried. If you have color-treated, heat-damaged, or naturally curly hair — you need this.
Originally posted on sephora.com
Abdalla
5
2/19/2026
Luxurious high-performing oil
I really like this oil, my hair is instantly nourished and stays that way for days until I wash it again. Also, you only need like 2 or 3 drops so even though it’s a small bottle, it still lasts a really long time
Originally posted on Sephora-uk