K18 Damage Shield Protective Shampoo 8.5 fl oz — color-safe, pH-balanced cleanser that reduces frizz

K18 Damage Shield Protective Shampoo is a color-safe, pH-balanced cleanser formulated to reduce frizz and tangles while protecting hair health and shine.

Designed for chemically treated and naturally fragile hair, this shampoo uses plant-derived surfactants and a pH-optimized formula to remove dirt and oil without over-swelling the cuticle. It pairs gentle cleansing with the K18PEPTIDE to help minimize protein loss, preserve color vibrancy, and support a balanced scalp microbiome. The less-is-more formulation cleans effectively yet remains mild enough for everyday use.

How does this shampoo reduce frizz and preserve color?

The formula is tailored to limit cuticle swelling during washing, which helps hair lay smoother and reflect light better. By avoiding harsh alkalinity and using pH optimization, the product reduces the mechanical causes of frizz and helps color molecules remain more stable in the hair fiber.

• pH-optimized to mimic hair’s natural acidity and reduce cuticle lifting
• Plant-derived surfactants that cleanse without stripping color
• K18PEPTIDE helps reduce protein loss that can lead to dull, brittle-looking strands
• Gently improves manageability to cut down on tangling during styling

Will it clean my scalp without disturbing the scalp microbiome?

Yes — the shampoo was formulated to remove oil and buildup while maintaining the scalp’s natural protective barrier. It avoids overly harsh detergents and keeps ingredients that support a balanced microbial environment.

• Certified microbiome-friendly formulation
• Gentle surfactants targeted to lift dirt and sebum effectively
• Neutral pH supports scalp barrier and microbial balance
• Suitable for regular use without overdrying the skin

How should I use K18 Damage Shield for best results?

Wet hair thoroughly and apply a small, even amount to the scalp and lengths, then massage to create a light lather before rinsing. For optimized outcomes, follow with your preferred conditioner or a K18 leave-in treatment to further seal the cuticle and enhance strength.

• Use daily or as needed for gentle cleansing
• Concentrate on the scalp to remove oil; lengths receive cleansing rinse-through
• Pair with conditioner or a K18 peptide treatment for added protection
• Rinse thoroughly to avoid residue that can weigh hair down

Is this safe for chemically treated and color-treated hair?

Absolutely — the shampoo is color-safe and formulated to be effective without accelerating color fade. Its gentle, pH-matching approach helps minimize the mechanical and chemical stresses that contribute to color loss and breakage.

• Color-safe surfactants reduce pigment stripping
• pH optimization prevents excess cuticle swelling after chemical services
• K18PEPTIDE supports protein integrity in processed hair
• Safe for regular use on treated and natural hair types

Who is this for: K18 Damage Shield Protective Shampoo is ideal for anyone with dry, fragile, chemically treated, or frequently styled hair seeking a reliable daily cleanse that maintains color, reduces frizz, and helps protect protein integrity. It’s also a good choice for people who prioritize a scalp-friendly formula and want salon-quality results without harsh detergents.

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.