A bottle of K18 Hair Repair DAMAGE SHIELD pH Protective Shampoo (multiple sizes) with K18PEPTIDE™ is displayed against a blue background, featuring a circular label that reads "new name! same formula.

K18 shampoo bottle on a white background

K18 Damage Shield shampoo bottle on a white background

A white bottle of K18 Hair Repair DAMAGE SHIELD pH Protective Shampoo - Multiple Sizes stands upright, with text highlighting its pH-balanced, color-protective formula, PEPTIDE PREP™, and vegan ingredients.

A streak of clear shampoo on a blue background highlights text promoting K18 DAMAGE SHIELD pH Protective Shampoo by K18 Hair Repair, designed for frequent washing, microbiome support, pH balance, and powered by K18PEPTIDE™.

Two bottles of K18 Hair Repair DAMAGE SHIELD pH Protective Shampoo, 250 ml and 930 ml sizes, with a pH-balanced formula, are displayed on a yellow and green stand against a blue background.

K18 Damage Shield shampoo bottle with blue shampoo sample on a blue background

Three K18 hair care product bottles on a blue background

K18 Damage Shield shampoo bottles on a blue background with product features highlighted.

Diagram showing hair cuticle before and after using pH shampoo on a blue background

Two K18 Damage Shield shampoos on a blue and green background with text indicating a 'new name'.

K18 Hair Repair

K18 DAMAGE SHIELD pH Protective Shampoo - Daily-use clean. No fillers. No stripping.

Name: K18 DAMAGE SHIELD pH Protective Shampoo - Daily-use clean. No fillers. No stripping.
Brand: K18 Hair Repair
Price: 39.0 USD
Availability: OutOfStock

$39.00

Out of stock

Size:

8.5 fl oz 16 fl oz 31.5 fl oz

Variant

K18 Peptide Prep Pro Wash Shampoo

A daily-use cleansing shampoo micro-dosed with the patented K18PEPTIDE™ — effective yet non-stripping, with a pH-optimized formula that cleanses thoroughly without disrupting your color or compromising the hair fiber. Engineered as a "clean canvas" foundation for everything that follows in your routine.

Results you can expect:

Effective daily cleaning — breaks down and removes dirt and oil without stripping
pH-balanced (4.0–5.0) to protect the hair fiber and scalp environment
Color-safe, non-sensitizing, and dermatologist tested
No fillers, no coating ingredients — a less-is-more formula that doesn't compromise
Creates the optimal foundation for K18 treatments and color-treated hair to perform at their best

Wet hair thoroughly, apply a generous amount, and massage into scalp and lengths. Rinse and repeat if needed. Use daily or as often as your routine requires. Pair with the K18 Damage Shield Protective Conditioner for everyday use, the K18 Peptide Prep Detox Shampoo for a periodic clarifying reset, or layer with the K18 leave-in molecular repair mask for deeper repair.

Pickup currently unavailable at Simply Colour Hair Salon Studio by Dean Downing

K18 DAMAGE SHIELD pH Protective Shampoo - Daily-use clean. No fillers. No stripping.

8.5 fl oz

Simply Colour Hair Salon Studio by Dean Downing

Pickup currently unavailable

24738 State Road 54
Lutz FL 33559
United States

+18132130959

What It Does

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 excessive swelling of the hair cuticle during washing, helping 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

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, keeping hair feeling healthy and strong.

How To Use

Safe to use every time you wash.
Massage into hair, focusing on the scalp.
Thoroughly rinse.
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.

K18 DAMAGE SHIELD pH Protective Shampoo - Daily-use clean. No fillers. No stripping.

K18 DAMAGE SHIELD pH Protective Shampoo - Daily-use clean. No fillers. No stripping.

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