The Salon Size Foundation Duo
The Salon Size Foundation Duo
The Salon Size Foundation Duo
The Salon Size Foundation Duo
The Salon Size Foundation Duo
The Salon Size Foundation Duo
5.0 stars, 16 reviews

The Salon Size Foundation Duo

Shampoo & conditioner for all hair types

Foundation Shampoo and Conditioner in two 900 mL salon-size bottles. A sulfate-free shampoo and silicone-free conditioning step.

Color Safe
Repair & Strengthen
Hydrate & Soften
Size:
Frequency:

Save with Bundles

The Refill Bundle
The Refill Bundle
$13 Savings
Free Shipping on orders $50+
Free + Easy Returns

This bestselling cleanse day duo is now available in 900mL salon sizes.

The Foundation Shampoo lathers beautifully, using clean, coconut-based surfactants to gently remove build-up, creating a perfect foundation for styling. The Foundation Conditioner, rich with peptides and ceramides, is deeply hydrating and smoothing. Suitable for all hair types and textures. Sulfate-free & silicone-free. 

Includes 900 mL Foundation Shampoo and 900 mL Foundation Conditioner. Prefer 300 mL bottles? See The Foundation Duo.

Explore how sulfates work in shampoo and what silicones do in hair products.

Recognition for the Foundation formulas

Foundation Shampoo & Conditioner received a 2023 Allure Best of Beauty award in Clean Hair-Care. Explore the awarded formulas here in 900 mL bottles.

Buying for your salon? Explore the RŌZ professional salon program for wholesale account information and backbar options. Qualified U.S. salons can apply for a full-size trial kit.

Push down and twist counterclockwise to unlock your pumps for the first time.

Thoroughly soak hair and massage Foundation Shampoo into scalp, adding more water where you need extra lather. Rinse out and repeat for a salon-grade cleanse.

Follow with our Foundation Conditioner, combing through ends, and letting it nourish your hair for a few minutes before rinsing it out.

Shampoo: Water/Aqua/Eau, Sodium Cocoyl Isethionate, Lauryl Glucoside, Sodium C14-16 Olefin Sulfonate, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Betaine, Sodium Methyl Oleoyl Taurate, Glycerin, Coconut Acid, Coco-Glucoside, Hydroxyacetophenone, Cocamide MIPA, Sodium Isethionate, 1,2-Hexanediol, Guar Hydroxypropyltrimonium Chloride, Caprylyl Glycol, Pisum Sativum (Pea) Peptide, Juglans Regia (Walnut) Seed Extract, Sodium Gluconate, Vitis Vinifera (Grape) Fruit Extract, Boswellia Serrata Resin Extract, Zingiber Officinale (Ginger) Root Extract, Vitis Vinifera (Grape) Vine Sap, Ceramide NP, Ceramide AP, Ceramide EOP, Sorbitol, Citric Acid, Leuconostoc/Radish Root Ferment Filtrate, Lecithin, Hydrogenated Polydecene, Xanthan Gum, Glutaral, Cetearyl Alcohol, Glyceryl Stearate, Potassium Sorbate, Cholesterol, Hydrogenated Lecithin, Phytosphingosine, Stearic Acid, Tetraacetylphytosphingosine, Glycosphingolipids, Citrus Aurantium Bergamia Peel Oil, Fragrance (Parfum), Sodium Benzoate, Geraniol, Limonene, Linalyl Acetate, Tetramethyl acetyloctahydronaphthalenes.

Conditioner: Water/Aqua/Eau, Glycerin, Cetearyl Alcohol, Persea Gratissima (Avocado) Oil, Behentrimonium Methosulfate, Cetyl Alcohol, Dicetyldimonium Chloride, Butylene Glycol, Guar Hydroxypropyltrimonium Chloride, Potassium Sorbate, Citric Acid, Propylene Glycol, Sodium Gluconate, Pisum Sativum (Pea) Peptide, Juglans Regia (Walnut) Seed Extract, Cetyl Hydroxyethylcellulose, Vitis Vinifera (Grape) Fruit Extract, Boswellia Serrata Resin Extract, Zingiber Officinale (Ginger) Root Extract, Vitis Vinifera (Grape) Vine Sap, Ceramide NP,  Ceramide AP, Ceramide EOP, Sorbitol, Leuconostoc/Radish Root Ferment Filtrate, Lecithin, Hydrogenated Polydecene, Hydrated Silica, Xanthan Gum, Disodium Phosphate, Silica Dimethyl Silylate,1,2-Hexanediol, Glyceryl Stearate, Sodium Phosphate, Cholesterol, Hydrogenated Lecithin, Phytosphingosine, Stearic Acid, Tetraacetylphytosphingosine, Glycosphingolipids, Citrus Aurantium Bergamia Peel Oil, Fragrance (Parfum), Ethylhexylglycerin, Sodium Benzoate, Geraniol, Limonene, Linalyl Acetate, Tetramethyl acetyloctahydronaphthalenes.

Allure, Best of Beauty 2023
  • Salon-size Foundation Shampoo, 900mL
  • Salon-size Foundation Conditioner, 900mL
Before image
After image
The Salon Size Foundation Duo Before After

Proven Performance

Clinically-tested, pro-grade haircare designed for visible results.

93%

felt hair was thoroughly cleansed and hair color was preserved

96%

experienced smoother, softer hair

*In a clinical study with expert clinician evaluation

Our signature fragrance evokes the spirit of an untamed California garden, verdant and clean, with subtle notes of woody vetiver and fresh, rejuvenating citron.

Notes of bergamot, fig & neroli blossom

Stylist Secret

“Spend extra time on the back of the head where most build up occurs. Splash a touch more water into the scalp to work up an incredible lather. Shampoo a second time for a salon grade feel. Keep a brush or comb in the shower. Detangle hair while conditioning to ensure even distribution and silky smooth strands.”

Mara Roszak

RŌZ Founder and Celebrity Stylist

The Routine

Step 1: Wash Day

Step 1: Wash Day

Our sulfate-free Foundation Shampoo thoroughly cleanses while our silicone-free Foundation Conditioner softens and nourishes.

Step 2: Milk Hair Serum

Step 2: Milk Hair Serum

Apply 2-3 pumps throughout on towel-dried hair before brushing. Air dry or blow dry smooth. Once dry, apply 1-2 pumps to smooth frizz or for a day 2 refresh.

Step 3: Santa Lucia Styling Oil

Step 3: Santa Lucia Styling Oil

Mix in 1 pump of Santa Lucia Styling Oil with 2 pumps Milk Leave-In Conditioner Hair Serum for extra hydration. On dry hair, add a few more drops to add shine and reduce frizz.

Clean isn’t a compromise — it’s our standard.

Performance grade
For all hair textures
Clean ingredients
Cruelty-free
Sustainable packaging
Vegan

FAQ

We always say to listen to your hair here—there’s no one-size-fits-all. Most people find their sweet spot is 2-3 times per week, but if your scalp leans oilier, you can absolutely use it more often. It’s a gentle, sulfate-free formula, so it cleans without stripping, which makes it great for regular use.

In case it gives you a little trouble, here's a trick! Please first tighten the pump around the neck of the bottle—as if you are simply tightening the pump, as if it’s too loose. Then, push down on the top of the pump and twist counterclockwise to pop up.

Yes! The Foundation Shampoo is safe for both color-treated and keratin-treated hair. It’s sulfate-free and designed to cleanse gently while helping maintain the integrity of your color and treatments.

Start small—you can always add more. For most hair types, a nickel to quarter-sized amount is a good starting point. Apply only to your mid-lengths to ends, and avoid the roots.

Yes! Our formulas are designed to be lightweight and nourishing without weighing your hair down. If you have fine hair, start with a small amount and keep it focused on the ends to maintain volume and movement.

Overall rating: 4.8235292 / 5 from 17 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["feels","hair","look","scent","size","conditioner","shampoo"].

Review highlights

Reviews

"Don’t like the smell it is awful and only last a little while"

— Monica (2/5)

So happy to have discovered RŌZ!

"We like purchasing jumbo sizes of our favorite shampoo/conditioner, and were at a loss when our prior favorite brand discontinued them. A friend recommended RŌZ and we're so glad they offer the Salon Size! Especially love the luxe lather of the Foundation shampoo - manages to feel both clarifying and hydrating."

— Emily F. (5/5)

Shampoo and conditioner

"My hair smells amazing"

— Anastasia M. (5/5)

Brown wavy hair

"This is the best stuff I’ve ever used for my brown wavy hair."

— James D. (5/5)

Roz Products

"I absolutely love allllll of the products from Roz. My hair has never been healthier , longer, or thicker."

— Abigail W. (5/5)

love

"love the duo :)"

— abby b. (5/5)

It cleans my hair really

"It cleans my hair really great. Customer Service"

— stephanie p. (5/5)

Love these products!

"I tried Roz on a whim, best hair decision ever! The products smell amazing, they make my hair soft and easy to manage. I bought the shampoo, conditioner, hair milk and oil. I love them all! I had previously been using another brand for the last 6 or 7 years, it was time for a change, and I am so glad I did!"

— Lisa C. (5/5)

Love the shampoo and conditioner

"Finally found great hair care for my 16-year-old daughter with very thick gorgeous hair."

— manoj k. (5/5)

Prepare for compliments!

"I didn’t realize I would get compliments just from changing my shampoo and conditioner. I’ve had multiple people ask what I’m doing differently and that’s it - I’ve made no other changes. My hair looks healthier and I’m told more vibrant. I’ve noticed it feels softer and I have significantly less frizz. I’m very pleased with this purchase."

— MarieAlyse P. (5/5)

Q&A

Hair Education

Practical haircare education for consumers and salon professionals, with clear guidance on products, ingredients, washing, styling, and technique.

Read more