OUAI Medium Hair Shampoo, 32 oz Refill — Hydrating, Sulfate-Free for Color-Treated Hair, Strengthens & Adds Shine

OUAI Medium Hair Shampoo is a hydrating, sulfate-free cleanser formulated to nourish medium-texture hair, protect color, reduce breakage, and add shine.

This shampoo was created for hair that sits between fine and thick—strands that need moisture without heaviness. The formula blends babassu and coconut oils with keratin and kumquat extract to detangle, smooth frizz, and revive shine while remaining safe for color-treated and chemically processed hair. Packaged as a 32 oz refill, it’s built for regular use and to reduce bottle waste when paired with your favorite OUAI dispenser.

How does this shampoo hydrate without weighing hair down?

The balance of lightweight babassu oil and coconut oil delivers moisture where hair needs it, while keratin strengthens and smooths the cuticle to prevent frizz. Because the formula is sulfate-free, it cleanses gently instead of stripping natural oils that give medium hair body and motion.

• Babassu oil: hydrates scalp and strands without heavy residue
• Coconut oil: seals ends and helps prevent breakage
• Keratin: smooths cuticles for easier detangling and shine
• Sulfate-free base: preserves color and natural texture

Will this work on color-treated or chemically processed hair?

Yes—OUAI Medium Hair Shampoo is formulated to be safe for color-treated, keratin-treated, and otherwise chemically processed hair. Its gentle surfactants and conditioning actives support color longevity while delivering moisture and minimizing fading from harsh detergents.

• Free of sulfates, parabens, and phthalates to protect color
• Keratin and kumquat extract maintain shine and manageability
• Cruelty-free and gluten-free for conscientious routines

How does it reduce breakage and improve hair strength?

The formula targets dryness and mechanical damage with oils that hydrate and proteins that reinforce hair structure. Regular use helps smooth tangles and reduce friction during styling, which lowers the chance of split ends and breakage over time.

• Coconut oil helps seal and protect ends from splitting
• Keratin fortifies the strand to resist snapping under stress
• Hydrating oils reduce friction for easier combing and styling

What scent and sensory experience can I expect?

OUAI’s Mercer Street fragrance layers Italian lemon, jasmine, and white musk for a fresh, modern scent that lingers subtly after rinsing. The shampoo foams gently and rinses clean, leaving hair soft and fragrant without heavy perfume buildup.

• Top notes: bright Italian lemon for immediate freshness
• Heart notes: floral jasmine for a refined softness
• Base notes: white musk for long-lasting, subtle warmth

Who this is for: OUAI Medium Hair Shampoo is aimed at people with medium-texture hair—those who find fine formulas too light and richer options too heavy. It’s a good pick if you wear color, have chemically treated hair, or experience dryness and frizz but still want movement and shine. Ideal for anyone building a low-maintenance routine who prefers clean, cruelty-free formulas and wants a 32 oz refill to save on single-use bottles.

Ingredients

Aqua (Water, Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl Cocoyl Taurate, Cocamide Mipa, Glycol Distearate, Parfum (Fragrance), Amodimethicone, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Glycerin, Citrus Japonica Fruit Extract, Panthenol, Hydrolyzed Keratin, Polyquaternium-7, Orbignya Oleifera Seed Oil, Cocos Nucifera (Coconut) Oil, Peg-150 Distearate, Sodium Lauroyl Glycinate, Cetrimonium Chloride (Anti-Static Agent/Agent Antistatique), C11-15 Pareth-7, Laureth-9, Trideceth-12, Cocoglucosides Hydroxypropyltrimonium Chloride, Acrylates Copolymer, Tocopherol, Peg-200 Hydrogenated Glyceryl Palmate, Peg-7 Glyceryl Cocoate, Disodium Edta, Citric Acid, Sodium Chloride, Sodium Hydroxide,, Tetrasodium Edta, Phenoxyethanol, Sodium Benzoate, Potassium Sorbate, Benzyl Alcohol, Benzyl Salicylate, Limonene, Hexyl Cinnamal, Ci 15985 (Yellow 6)