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℉.
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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.
Clinically-tested, pro-grade haircare designed for visible results.
experienced softer hair*
said it reduced the appearance of frizz*
experienced more hydrated hair*
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
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
Overall rating: 4.8469863 / 5 from 1294 reviews.
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.
Review topics: ["hair","feels","look","scent","texture","bottle","packaging","serum","hydration","fragrance","results","leave","formula","residue","weight","frizz","ingredients","style","amount","curls","consistency","absorbs","oil","milk","quality","customer service","touch","shine","magic","scalp"].
"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!"
"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!"
"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."
"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."
"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."
"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."
"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."
"I have long hair with fine to medium strands, and I use heat tools almost every day, so keeping my hair soft and healthy can be challenging. Many leave-in products tend to weigh my hair down or make it feel greasy, but this serum was different. From the first use, my hair felt incredibly soft, smooth, and lightweight. It helped reduce frizz, made brushing and styling easier, and left my hair looking healthier without losing movement. I love how silky my hair feels while still staying manageable throughout the day."
"I ordered things that look great on Instagram a lot and sometimes they are very disappointing. This product is delicious and amazing. I am now going to order the shampoo and conditioner because they sent me samples and I love all of it so much it’s oil based so it oils your hair without making it greasy it smells amazing and it makes your hair, soft and healthy. The difference is huge for me"
"This is celebrity-stylist favorite hair serum for a reason! It’s beautifully engineered to deliver deep, weightless hydration and frizz control using plant lipids and micro-proteins. I have dry and frizzy ends so something like this is the dream! Formulation-wise, the serum also contains ingredients like panthenol which helps improve hair elasticity. I love the packaging that it comes in and it’s very easy to use! The scent is wonderful too. It truly is great for all hair types - keeping your ends hydrated helps with the issue of split ends! I love that the serum uses natural algae and plant lipids instead of heavy plastics and silicones."
Practical haircare education for consumers and salon professionals, with clear guidance on products, ingredients, washing, styling, and technique.
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