K18 Damage Shield pH Protective Shampoo - 930ml

• Patented K18PEPTIDE reduces protein loss for healthy, strong hair
• pH-optimised formula reduces cuticle swelling to prevent frizz and preserve colour
• Certified microbiome-friendly — cleanses without disrupting the scalp's natural barrier
• Colour-safe and gentle enough for every wash
• 930ml professional salon size for high-volume use

pH-Optimised Protective Shampoo with Patented K18PEPTIDE Technology

K18 Damage Shield pH Protective Shampoo is a scientifically advanced cleanser that takes a fundamentally different approach to what a shampoo can do for the health of the hair. With the patented K18PEPTIDE built into the formula, it goes beyond cleansing to actively reduce protein loss and help keep hair feeling strong and healthy with every wash. This 930ml professional salon size is built for high-volume daily use and is gentle enough to be used every time you cleanse without any compromise on hair or scalp health. Find it alongside our full range of shampoos and professional hair care.

pH-Optimised Formula for Frizz Prevention and Colour Preservation

Most shampoos have a higher pH than the hair itself, which causes the cuticle to swell during washing — leading to frizz, colour fade and a rough, dull finish after rinsing. The K18 Damage Shield is specifically pH-optimised to reduce that excess cuticle swelling during cleansing, preserving the smooth, flat cuticle that reflects light most effectively and keeps colour molecules locked inside the hair shaft. The result is less frizz, better colour retention and more shine after every wash — not despite cleansing, but because of how the formula cleanses. A genuinely smart choice for dry or colour-treated hair that needs protection at every step of the routine.

Certified Microbiome-Friendly for a Healthy Scalp Barrier

The K18 Damage Shield is certified microbiome-friendly, meaning the formula has been tested and verified to cleanse effectively without disrupting the scalp's natural protective microbiome. The scalp's microbiome — its ecosystem of beneficial bacteria — plays an important role in maintaining scalp health, barrier function and overall hair health. A shampoo that removes dirt and oil without stripping or disrupting that natural balance is a meaningfully better daily choice for anyone with a sensitive scalp or anyone who simply wants their scalp environment to support rather than compromise the health of their hair.

How to Use K18 Damage Shield pH Protective Shampoo

Apply to wet hair and work into a lather from scalp to ends. Rinse thoroughly. Use every time you cleanse for ongoing pH protection, protein preservation and microbiome-friendly scalp care. For maximum hair health and repair, follow with K18 Leave-In Molecular Repair Hair Mask as part of a complete K18 treatment routine.

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