Our Take
K18's everyday shampoo, designed for regular use on non-mask wash days. A pH-optimised formula that minimises excess cuticle swelling during washing — one of the underappreciated ways that shampooing itself contributes to frizz and damage. Prevents tangling and frizz, preserves colour, and enhances shine. K18PEPTIDE™ replenishes protein lost during washing. Like the detox shampoo, it uses alpha-olefin sulphonate (AOS) as its primary surfactant, placing it in cgm_modified territory for strict CGM followers. Microbiome-certified, allergy-tested. Pairs with the DAMAGE SHIELD conditioner as a complete daily system.
Who is this for?
Our assessment — not the brand's claim
Curl Pattern
Porosity
Free From
Ingredients at a Glance
Water
Universal solvent and primary base of most hair products.
Sodium C14-16 Olefin Sulfonate
~ CautionStrong anionic surfactant. A sulFONATE not sulFATE - technically CGM-compliant but quite s…
Cocamidopropyl Betaine
Gentle amphoteric surfactant derived from coconut. CGM-friendly cleanser.
Sodium Methyl 2-Sulfolaurate
A mild anionic surfactant from lauric acid. A gentle alternative to SLS used in low-irrita…
K18PEPTIDE
Free From
Want to know more about an ingredient? Browse the ingredient glossary →
How to Use
Use as your everyday shampoo on non-mask wash days. Massage into wet hair and scalp, then rinse thoroughly. Follow with the DAMAGE SHIELD protective conditioner. For a complete routine, alternate with the PEPTIDE PREP detox shampoo and K18 mask once a week.
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Where to Buy
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K18 Hair UK
Details
- Price tier
- premium
- Routine step
- Cleanse
Reviews
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