"This is the absolute best hair product I have ever owned. I use it daily on both damp and dry hair. It smooths my frizz but does not weigh it down or make it look oily. The smell is light and beautiful. Packaging is chic and elegant. It’s all around my favorite! Cannot recommend it enough!"
$0 now with try before you buy
Our lightweight hydrating 3-in-1 leave-in is your daily essential for smooth, frizz-free air dries, blow dries, or day 2-3 refreshes. Protects from heat up to 450℉.
Save with Bundles
The Hydrate + Hold Kit
$11 Savings
Why we love it:
This versatile styler works on all hair types to detangle, de-frizz, and deeply moisturize, without feeling heavy. Formulated with nourishing BotaniComplex™, Red Algae and Hyaluronic Acid, it leaves hair soft, silky, and protected from heat styling.
100mL / 3.4 Fl. Oz.
Milk is the leave-in conditioning step. Santa Lucia Styling Oil is a styling oil, while Evergreen Style Cream is a styling cream for sleek shapes and flyaways.
Choose a drying technique with the step-by-step air-dry guide.
Proven Performance
Clinically-tested, pro-grade haircare designed for visible results.
96%
experienced softer hair*
95%
said it reduced the appearance of frizz*
91%
experienced more hydrated hair*
79%
Proven to reduce breakage by up to 79%*
Defends against daily stress from brushing and styling*
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
Use Milk Hair Serum in combination with Santa Lucia Styling Oil on damp and dry hair. Lightweight enough to work on any hair type. Use 2 pumps of Santa Lucia for every 1 pump of Milk.
Mara Roszak
RŌZ Founder and Celebrity Stylist
The Difference
Clean isn’t a compromise — it’s our standard.
Performance grade
For all hair textures
Clean ingredients
Cruelty-free
Sustainable packaging
Vegan
FAQ
Overall rating: 4.847626 / 5 from 1306 reviews.
AI Generated Review Summary
This Milk Hair Serum is praised for its ability to detangle, de-frizz, and deeply moisturize hair without feeling heavy. Customers appreciate its soft, silky texture and the luxurious packaging. The product is also noted for its pleasant scent and its effectiveness in enhancing hair health and shine.
Summary topics
- Hair Feel (17%): A significant number of customers remarked that the product makes their hair feel amazing, great, soft, and healthy.
- Packaging (4%): Customers appreciated the beautiful and luxurious packaging of the RŌZ Milk Serum product.
- Scent (35%): A substantial number of customers appreciated the pleasant smell of the RŌZ Milk Hydrating Leave-In Conditioner Hair Serum.
- Frizz Control (5%): Customers appreciated the ability of this product to eliminate frizz and provide all-day hydration.
Review topics: ["color","feels","packaging","issues","hair","look","texture","scent","bottle","hydration","fragrance","shipping","results","formula","residue","serum","weight","ingredients","style","leave","amount","consistency","absorbs","frizz","oil","customer service","quality","curls","touch","magic"].
Review highlights
- "My hair feels incredibly soft, smells amazing, and looks healthier than ever." —
- "This serum smells amazing, and makes my hair feel hydrated and nourished." —
- "My hair feels smoother and healthier overall, and the light scent is a nice bonus—subtle but pleasant." —
Reviews
Amazing Product
"The milk hair serum is a game changer. You can use it on wet hair before blow drying, and it can be used as a finishing product for frizz and fly aways, and it doesn't make fine hair greasy. I have bought several bottles over the past few years, and each bottle lasts me almost a year. I highly recommend!"
silky hair
"This is the only product I've ever tried that leaves my otherwise textured wavy hair actually smooth and silky and feels feather light. I can run my fingers through my hair without friction or tangles. I'm 46 with some extremely course gray hair, but with this serum, it feels silky again like I remember in my 20s!"
"Literally the best hair serum I’ve ever used! It’s not too heavy, but still hydrates my hair perfectly and leaves it feeling so soft and healthy. No question, I will absolutely be buying this again!"
Not perfect for my hair, but still very good!
"I have thin and damaged hair with dry ends. I used the serum on damp hair. + It has a vivid scent, which is something I generally enjoy. + I noticed it surprisingly provides some styling to my hair. + It gave a softer feeling to my hair. - I felt that the serum took away the feeling of having just washed my hair. I would have expected a shinier and softer effect from the serum for this price. However, the smell and the styling help make it unique as a serum."
Loving the smell and softness
"My hair doesn't feel so detangled, and I love the smell. I've noticed I don't have as much as split ends."
Beautiful lightweight
"My thin lightweight hair loves this stuff. The packaging is wonderful and fits easily in my to go back for traveling and best of all It has a spa like botanical scent from the essential oils inside the formula and the consistency is wonderful for my hair type . It doesn’t make my hair feeling greasy or weighed down it just feels so soft and smooth to touch. It’s the perfect serum for before and after blow drying for the soft bouncy blowout look."
SO SOFT
"It took a little "training" to get my hair to air dry the way I was wanting, but this certainly helped with frizz and my hair was still so soft, it doesn't feel like there's any product in it, which I love."
Love it!
"I love the Milk Hair Serum! Usually I’m picky with scents and this one is amazing. It’s stronger scented when it goes on but isn’t overpowering when it dries. My hair feels smooth and dries naturally afterwards. Will definitely purchase again."
All products are fantastic
"I have tried almost everything with thick, course hair that gets so frizzy in humidity. The salon I go to started to carry Roz and spoke so highly about all the products. I bought the Milk serum first, then shampoo and conditioner and oil. They are fantastic. And I learned something from Roz, and use more product that I ever used. I followed her directions and am so happy with the results. Just try it, you won't be sorry."
Q&A
Hair Education
Practical haircare education for consumers and salon professionals, with clear guidance on products, ingredients, washing, styling, and technique.
