K18 Damage Shield Protective Shampoo
- K18PEPTIDE to reduce protein loss
- pH-optimized to limit cuticle swelling
- Plant-derived surfactants, color safe
- Certified microbiome-friendly formula
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A color-safe, pH-tuned shampoo for damaged hair that cleans well without swelling the cuticle. The listing gives no size or scent details.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0CQ5956VNCategory: Hair Shampoos
Overview
Plant-derived surfactants handle the cleaning in this Damage Shield shampoo, breaking down dirt and oil. A pH matched to hair limits cuticle swelling, and a signature peptide helps reduce protein loss during washing.
Deep cleaning that stays gentle on damaged, colored hair is the strength of this formula. Size, scent and full ingredients are missing from the listing.
Who it's for
Every-wash use on colored or chemically damaged hair suits this shampoo. People with healthy, untreated hair may not need a repair-focused formula.
Pros and cons
- Color safe cleansing
- PH matched to hair
- Reduces protein loss
- Gentle enough for every wash
- Bottle size not listed
- Scent not stated
Performance notes
Washing swells the cuticle, which lets color and protein escape. A pH close to hair's own holds that swelling low, and the peptide limits protein loss so hair feels stronger over repeat washes.
Specifications
| Brand | K18 |
|---|---|
| Certified Microbiome-friendly Formula | Removes dirt and oil without disrupting the scalp’s natural protective barrier |
| Color-safe But Powerful Cleansing | Plant-derived surfactants deliver safe but effective high-power cleansing to break down and remove dirt + oil |
| Designed For Damaged Hair | pH-optimized formula helps prevent excess swelling of the hair cuticle during washing, which helps maintain color, improve hair health and shine, and reduce frizz |
| Formulated With K18peptide | Helps reduce protein loss to keep hair feeling healthy and strong |
| Gentle Enough To Use Every Time You Cleanse | Gentle on hair AND scalp. pH-optimized formula mimics hair’s natural pH, to reduce cuticle swelling and maintain hair health, and preserve the scalp microbiome |
Frequently asked questions
Is K18 Damage Shield shampoo color safe?
Yes. The listing calls it color-safe with plant-derived surfactants.
Can I use K18 Damage Shield every wash?
Yes. It is described as gentle enough to use every time you cleanse.
Is K18 Damage Shield a leave-in treatment?
No. It is a rinse-out shampoo.