OUAI Medium Hair Shampoo - Premium Mercer Street Collection for the Elevated Vanity Counter
OUAI Medium Hair Shampoo - Premium Mercer Street Collection for the Elevated Vanity Counter
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Why you'll love it
- Sulfate, paraben, and phthalate-free formula protects color and keratin treatments
- One product cleanses, hydrates, fights frizz, and adds shine — simplifying the routine
- Refillable size option supports sustainability and long-term value
- Multi-texture versatility works for straight, wavy, curly, and coily hair
- Signature Mercer Street scent (Italian lemon, jasmine, white musk) elevates the shower into a sensory experience
- Cruelty-free and gluten-free credentials align with ethical beauty values
Perfect for
- Daily hydrating wash for medium-textured hair that is neither fine nor thick
- Color-treated hair maintenance to prevent fading and dryness
- Repair routine for dry, damaged strands with split ends and breakage
- Frizz control and shine revival across straight, wavy, curly, and coily textures
- Travel-sized haircare for gym bags and short trips
Product Information
For Hair That Swings Both OUAI's: Not fine, not thick? This hydrating shampoo was made for strands in between. It cleanses, fights frizz, nourishes and revives shine for straight, wavy, curly and coily hair types.
Stronger Strands, Less Breakage Babassu oil hydrates hair and scalp. Coconut oil seals split ends and reduces breakage on dry, damaged strands. Kumquat extract revives shine. Keratin smooths frizz and detangles. Apply to roots and work through to ends.
A Clean Formula You Can Feel Good About: Sulfate, paraben and phthalate free. Safe for color-treated, keratin-treated and chemically-processed hair. Cruelty free and gluten free. Clean ingredients, no compromises.
Pair It For Best Results: Follow with OUAI Medium Conditioner for hydrated, smooth, frizz-free hair. Layer in OUAI Hair Oil for added shine and frizz control. Get on your OUAI to a happy medium with the full routine.
OUAI Hair, Body & Fragrance: This hydrating, frizz-fighting shampoo is made to transport you wherever you go, with a Mercer Street scent featuring notes of Italian lemon, jasmine, and white musk.
Items Details
Features & Specs
Item Form: Liquid
Hair Type: Normal
Scent Name: Mercer Street
Other Special Features of the Product: Scented
Product Benefits: Nourishing
Suitable Hair Color: All Hair Colors
Frequently Asked Questions
Does the bottle design look as premium as the price suggests?
Yes. The packaging is sleek, minimal, and gift ready, with clean lines and a sophisticated aesthetic that looks at home next to other high end vanity staples and on a designer bathroom shelf.
Is the Mercer Street scent signature enough to feel like a true luxury brand experience?
It is. Mercer Street is a custom blended fragrance with Italian lemon, jasmine, and white musk, created to feel like a true signature scent rather than a generic shampoo fragrance. It is the same scent used across the OUAI bath line.
Can I use this as part of an elevated gifting presentation without extra wrapping?
Absolutely. The bottle itself is presentation ready, making it easy to gift for birthdays, holidays, or hostess moments without needing additional packaging.
Does the formula feel salon quality compared to drugstore luxury dupes?
Yes. The active blend of coconut oil, babassu oil, keratin, and kumquat extract, combined with the clean ingredient standards, delivers performance that matches or exceeds what you would experience in a high end salon.
Is the liter size available for someone who wants to invest in long term value?
Yes. The liter size is offered for loyal users who want the best per ounce value while keeping their bathroom stocked with a salon quality staple.
Is this a high end gift that matches the quality of designer haircare brands?
Yes. OUAI is positioned alongside premium designer haircare, with a signature scent, clean formula, and presentation ready packaging that holds its own next to brands at much higher price points.
Does the fragrance feel sophisticated rather than youthful or trendy?
The Mercer Street scent is designed to feel timeless and grown up. Italian lemon adds brightness without being fruity, jasmine adds a refined floral note, and white musk gives it a polished, elevated finish.
Will this shampoo look beautiful sitting on my marble or stone bathroom counter?
Yes. The minimal, clean packaging is intentionally designed to complement elevated bathroom aesthetics, including marble, stone, brushed metal, and natural wood finishes.
Is this a good upgrade gift for someone who already uses premium haircare?
Yes. Even users of other luxury brands are often surprised by the signature scent experience and the visible performance on color treated, frizz prone, or medium texture hair.
Does the formula justify the premium positioning with visible results?
Customers report softer, shinier, more manageable hair with less breakage after consistent use. The hydrating blend of coconut oil, babassu, keratin, and kumquat extract delivers measurable improvements that back up the luxury positioning.
How does OUAI compare to other luxury shampoos at a similar price point?
OUAI delivers the same signature scent experience, clean ingredient list, and visible performance as brands priced 30 to 50 percent higher, making it a strong value in the luxury haircare category.
Is this shampoo better than Kérastase or Oribe for color treated hair?
Both are excellent brands. OUAI stands out with a sulfate free, paraben free, and phthalate free formula at a more accessible price point, plus a signature scent experience that feels uniquely its own.
How does OUAI compare to salon brand shampoos sold through my stylist?
OUAI is the same caliber of formula you would find behind the chair, with a clean ingredient list, targeted hydration, and color safe performance, available direct to consumer at a more accessible price.
Is a refillable size really premium or does it feel like a downgrade?
The refillable size is designed to be a premium experience. You keep the original full size bottle on display and simply refill it, which is both more sustainable and more elegant than constantly replacing packaging.
Is the price really worth it for a daily shampoo?
Most users say yes, because the formula replaces multiple steps, the scent elevates the daily shower, and the color safe, sulfate free blend protects expensive color and keratin treatments. One bottle does the work of several.
Will the scent compete with my perfume?
The Mercer Street fragrance is designed to complement rather than compete. The soft white musk base pairs well with most perfumes and the scent is light enough in the hair to layer without clashing.
Is this a gift I would be proud to give to someone with expensive taste?
Yes. The presentation, signature scent, and clean ingredient credentials make it a confident gift for someone who values quality and aesthetics, even if they already own multiple luxury haircare products.
Does the brand feel as established as the legacy luxury haircare names?
OUAI has built a strong following in the clean luxury space, with presence in high end salons, retail partners, and editorial coverage that places it firmly in the premium haircare category.
How do I use OUAI Medium Hair Shampoo for the best results?
Wet hair thoroughly, massage a small amount of shampoo into the scalp and through the lengths, then rinse. For best results, follow with the matching OUAI Medium Hair Conditioner. Use daily or as often as you wash your hair.
How much shampoo should I use per wash?
A quarter sized amount is usually enough for medium length hair. Adjust up for longer or thicker hair and down for shorter or finer textures. The formula is concentrated, so a little goes a long way.
Can I use this shampoo every day?
Yes. The sulfate free formula is gentle enough for daily use, even on color treated and chemically processed hair. The hydrating blend of coconut oil, babassu oil, and keratin cleanses without stripping.
Is this shampoo safe for color treated hair?
Yes. The formula is specifically designed to be safe for color treated, keratin treated, and chemically processed hair. It is sulfate free, paraben free, and phthalate free, so it will not strip color or shorten the life of your treatment.
Is this shampoo safe for keratin treated or chemically processed hair?
Yes. The gentle, sulfate free formula is safe for keratin smoothing treatments, perms, relaxers, and other chemical services. It will not strip the treatment or cause premature fading.
What comes in the box when I order the full size shampoo?
You will receive one 10 oz OUAI Medium Hair Shampoo bottle with the signature Mercer Street scent. The bottle has a flip top cap and is ready to use. No additional accessories are required.
Is this shampoo safe for my scalp?
Yes. The formula is sulfate free and designed to be gentle on the scalp, with hydrating coconut oil, babassu oil, and kumquat extract to nourish rather than strip. It is appropriate for normal to dry scalps.
Is this shampoo cruelty free and vegan?
OUAI is a cruelty free brand and does not test on animals. The formula is also gluten free. For the most current vegan certification status of specific products, please check the product packaging or the brand's official site.
What is the difference between shampoo and co wash for medium hair?
A traditional shampoo like this one uses gentle surfactants to lift oil, product buildup, and impurities from the scalp and hair. A co wash is a cleansing conditioner that does not contain traditional surfactants and is used as an alternative between washes. This shampoo is designed for regular cleansing, while a co wash would be a supplemental or alternative step.
