K18 DAMAGE SHIELD pH Protective Shampoo bottle on blue background, promoting healthy and color-safe hair care.
K18 DAMAGE SHIELD pH Protective Shampoo bottle with benefits listed, optimized for hair health and color protection.
Graphic showing hair cuticle differences with and without pH shampoo, highlighting frizz, tangling, and damage prevention.
Cleanse image highlighting K18PEPTIDE™ for everyday washing, showing benefits for healthier, smoother hair.
K18 DAMAGE SHIELD pH protective shampoo bottle with blue gel, highlighting new name and same formula.
K18 healthy hair care products featuring DAMAGE SHIELD shampoo and PEPTIDE PREP for daily and treatment routines.

DAMAGE SHIELD ph Protective Shampoo

Regular price $62.00 Sale price$53.00 NZD Save $9.00
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  • In stock, ready to ship
  • Authorized K18 Retailer
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Due to the Canada Post strike, we're shipping with alternative carriers to ensure all packages arrive on time.
Description

A color-safe, pH-optimized shampoo with the patented K18PEPTIDE™ to effectively cleanse while maintaining hair health and protecting hair from damage. pH-optimized formula helps reduce excess swelling of the hair cuticle during washing to help prevent frizz, preserve color, and enhance shine. Scalp microbiome-friendly and gentle enough to use every time you cleanse.

  • gentle daily cleaning
  • microbiome-friendly
  • pH-optimized
More to know
  • 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
  • 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
Key benefits

Less is more formulation delivers a superior clean without compromise:

  • Optimized pH cleanses hair and scalp without over-drying
  • Certified microbiome-friendly formula removes dirt and oil without disrupting the scalp’s natural protective barrier
  • K18PEPTIDE™ helps reduce protein loss to keep hair feeling healthy and strong
How to use
  1. Safe to use every time you wash.
  2. Massage into hair, focusing on scalp.
  3. Thoroughly rinse.
  4. Repeat as needed.

For best results, follow with DAMAGE SHIELD protective conditioner.

Ingredients

Water (Aqua) (Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl 2-Sulfolaurate, Sodium Lauryl Sulfoacetate, sh-Oligopeptide-78, Panthenol, Glycerin, Sodium Phytate, Guar Hydroxypropyltrimonium Chloride, Disodium 2-Sulfolaurate, Caprylyl Glycol, Caprylhydroxamic Acid, Benzoic Acid, Citric Acid, Sodium Hydroxide, Sodium Chloride, Fragrance (Parfum), Limonene.

Disclaimer

Certified microbiome-friendly by MyMicrobiome Standard

91% said hair looks healthier¹
91% said hair feels smoother¹
91% said hair does not feel weighed down¹
¹Results observed in a consumer test of 35 subjects after 21 days of consistent use of the PEPTIDE PREP™ pH maintenance shampoo

Protect your healthiest hair¹¹We define “your healthiest hair” as hair that exhibits a combination of strength, elasticity, manageability, softness, smoothness, vibrancy, and shine. It is hair that you feel confident in, and which you repair regularly with K18 molecular repair products.

We understand the importance of using genuine beauty products. That's why we're proud to be an authorized retailer for all the brands we carry. When you shop with us, you can be sure you're getting fresh, authentic products delivered directly from the brands themselves.

Why Choose Authorized Retailers?

Unfortunately, counterfeit and expired products are a real concern online. Shopping with unauthorized sellers puts you at risk of receiving ineffective or even harmful cosmetics.

Here's why Boutique Deauville is your trusted source for beauty essentials:

  • Guaranteed Authenticity: We source directly from brands, ensuring you receive only genuine products.
  • Fresh Inventory: Regular shipments mean you get the latest formulations with optimal shelf life.
  • Safe & Effective: Avoid the risks associated with counterfeit or expired cosmetics.

Please note: due to the Canada Post strike, we are using alternative carriers.

Deliveries of our packages are made without a signature. During checkout, you can add a signature for $5 if your order is less than $299. Orders $299+ will all be shipped with a Signature Included.

  • All orders are shipped using UPS or Canada Post
  • Orders will be processed within 1-2 business days, Monday to Friday.
  • Shipping can take up to 7 business days to receive depending on your location.
  • You will be notified within 24 hours of any order issues that may occur

Peak Times Disclaimer:

  • During peak times like Holidays and promotions such as Black Friday and Boxing Day, due to high order volume, your items may take longer.

If you entered your address incorrectly when making your order, we are not liable. Don't forget to enter the right shipping information!

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