K18 Hair Shampoo is finally here to protect and strengthen strands

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We already told you in December 2021 how good K18 is. The Leave-In Molecular Repair Hair Mask repairs strands and protects them from chemicals (like bleach) and heat (like all those hot tools). It has since gone viral on TikTok and Kim Kardashian and Pete Davidson became fans. That’s why we’ve been waiting for the perfect complimentary shampoo. And we just came two. K18 Shampoo has just been launched in daily and detox options.

First, let’s explain what K18 does. Although K18 calls its flagship product a mask, don’t wash out the Leave-In Molecular Repair Hair Mask. It’s not like a typical conditioning mask, but you use it in place of your conditioner. The patented bioactive peptide treatment strengthens and improves the hair’s elasticity, helping to actually reverse damage. It’s lightweight so you don’t have to worry about it weighing your hair down. In fact, you’ll probably still need a leave-in conditioner. The formula will repair strands over time, but you’ll still see a difference in the look and feel of hair after just one use.

K18 Leave-In Molecular Repair Hair Mask Sephora

Photo: K18.

To prep your hair for this repairing mask to work as best as it can, you can now use either the Peptide Prep pH Maintenance Shampoo ($36 at Sephora) or the Peptide Prep Clarifying Detox Shampoo ($38 at Sephora). It depends on what your hair needs that day.

This Kim K approved hair brand has finally launched a shampoo designed to protect and strengthen strands


Use Detox Shampoo when you need a deeper cleanse. Get rid of all that dry shampoo, oil and sebum with activated charcoal and salicylic acid. The brand recommends using this 1-2 times a week.

Product/Peptide Prep PH Maintenance Shampoo


On the other hand, use the pH maintenance shampoo every time you wash your hair. It still cleans thoroughly, but also protects the natural moisture content of the hair.

How to use both products. First shampoo with either option. Then towel dry your hair. Apply the mask to your hair and wait four minutes. Then style as usual with any leave-in products such as styling creams and heat protectants. It’s a bit of a process, but it’s worth it – trust us.

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