shipping icon

pickup icon

Skip to main content
White 8.5 ounce bottle of K18 Biomimetic Hairscience Peptide Prep pH Maintenance Shampoo on a blue backdrop
Smeared dollop of clear, bubbly K18 Peptide Prep pH Maintenance Shampoo on a blue surface is labeled, "Cleanse: For frequent everyday washing; 91% said hair feels healthier, smoother, and does not feel weighed down; Formulated with K18PEPTIDE™""
Flow chart in white on a blue background is titled, "How to use shampoos with your K18 mask"
Model looking upwards and to the side has very shiny, voluminous hair
Model with head tilted has healthy-looking platinum hair
White 8.5 ounce bottle of K18 Biomimetic Hairscience Peptide Prep pH Maintenance Shampoo on a blue backdrop
Smeared dollop of clear, bubbly K18 Peptide Prep pH Maintenance Shampoo on a blue surface is labeled, "Cleanse: For frequent everyday washing; 91% said hair feels healthier, smoother, and does not feel weighed down; Formulated with K18PEPTIDE™""
Flow chart in white on a blue background is titled, "How to use shampoos with your K18 mask"
Model looking upwards and to the side has very shiny, voluminous hair
Model with head tilted has healthy-looking platinum hair
White 8.5 ounce bottle of K18 Biomimetic Hairscience Peptide Prep pH Maintenance Shampoo on a blue backdrop
Smeared dollop of clear, bubbly K18 Peptide Prep pH Maintenance Shampoo on a blue surface is labeled, "Cleanse: For frequent everyday washing; 91% said hair feels healthier, smoother, and does not feel weighed down; Formulated with K18PEPTIDE™""
Flow chart in white on a blue background is titled, "How to use shampoos with your K18 mask"
Model looking upwards and to the side has very shiny, voluminous hair
Model with head tilted has healthy-looking platinum hair
White 8.5 ounce bottle of K18 Biomimetic Hairscience Peptide Prep pH Maintenance Shampoo on a blue backdrop
Smeared dollop of clear, bubbly K18 Peptide Prep pH Maintenance Shampoo on a blue surface is labeled, "Cleanse: For frequent everyday washing; 91% said hair feels healthier, smoother, and does not feel weighed down; Formulated with K18PEPTIDE™""
Flow chart in white on a blue background is titled, "How to use shampoos with your K18 mask"
Model looking upwards and to the side has very shiny, voluminous hair
Model with head tilted has healthy-looking platinum hair

K18 - Peptide Prep pH Maintenance Shampoo

K18
$36.00

Color-safe, pH-optimized shampoo with patented K18PEPTIDE™ effectively cleanses while maintaining hair health, reducing frizz and tangles, preserving color, and enhancing shine.

Key Benefits:
• Plant-derived surfactants deliver safe but effective high-powered cleansing to break down and remove dirt and oil without over-drying or disrupting the scalp’s natural protective barrier.
• pH-optimized formula helps prevent excess swelling of the hair cuticle during washing which helps maintain color, improve hair health and shine, preserve the scalp microbiome, and reduce frizz.
• K18PEPTIDE™ helps reduce protein loss to keep 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.