K18 DAMAGE SHIELD pH Protective Shampoo

pH-optimised everyday shampoo to cleanse without provoking damage

~CGM ModifiedContains ProteinStep: Cleanse

Where to Buy

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K18 Hair UK

In stockBest price

£39.00Buy

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

LowNormalHigh

Free From

✓ Sulphate-Free✓ Silicone-Free✓ Paraben-Free✓ Alcohol-Free

Ingredients at a Glance

Water

Solvent

Universal solvent and primary base of most hair products.

Sodium C14-16 Olefin Sulfonate

~ Caution

Surfactant

Strong anionic surfactant. A sulFONATE not sulFATE - technically CGM-compliant but quite s…

Cocamidopropyl Betaine

Surfactant

Gentle amphoteric surfactant derived from coconut. CGM-friendly cleanser.

Sodium Methyl 2-Sulfolaurate

Surfactant

A mild anionic surfactant from lauric acid. A gentle alternative to SLS used in low-irrita…

K18PEPTIDE

Peptide

Free From

✓ Sulphate-Free✓ Silicone-Free✓ Paraben-Free✓ Alcohol-Free

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.