Editor's TipEditor's Tip

For extra hold, use Number 4 Non-Aerosol Hair Spray after styling.

Number 4 Hair Care

Birchbox Breakdown

News flash: you don’t need to see your stylist to get the sleek, glossy perfection of a salon blowout. To achieve the same results at home, turn to Number 4’s Blow Dry Lotion. Part thermal protector and part leave-in treatment, it’s packed with natural botanicals to keep your strands healthy and smooth. Plus, it has a luxurious scent of citrus and cool marine notes over base notes of musk and amber.

How it Works

Soy protein strengthens and protects while vitamin B5 conditions and moisturizes locks. Antioxidant-rich acai berry, black currant, and Irish moss provide backup support. The formula is vegan and free of gluten, sulfates, and parabens, so you can feel good about what you’re putting in your hair.

How to Use

Rub a small dollop between your palms and distribute evenly through damp hair. Blow dry and flat iron hair as desired.

Water, VP/VA Copolymer, Isoceteth-20, Chlorphenesin, Fragrance, PEG/PPG-18/18 Dimethicone, PEG-12 Dimethicone, Silicone Quaternium-8, Polyquaternium-11, Disodium EDTA, Cinnamidopropyltrimonium Chloride, Limonene, Hydrolyzed Jojoba Protein, Hydrolyzed Vegetable Protein PG-Propyl Silanetriol, Cocodimonium Hydroxypropyl Hydrolyzed Rice Protein, Hydrolyzed Soy Protein, Butylphenyl Methylpropional, Aminomethyl Propanol, Methylisothiazolinone, Linalool, Helianthus Annuus (Sunflower) Seed Oil, Alpha-Isomethyl Ionone, Citral, Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Glycerin, Coumarin, Evernia Furfuracea (Treemoss) Extract, Sodium Ascorbyl Phosphate, Macrocystis Pyrifera Extract, Ribes Nigrum (Black Currant) Leaf Extract, Yogurt Extract, Arctium Lappa Root Extract, Camellia Sinensis Leaf Extract, Chondrus Crispus (Carrageenan) Extract, Euterpe Oleracea Fruit Extract, Garcinia Mangostana Peel Extract, Hibiscus Sabdariffa Flower Extract, Ilex Paraguariensis Leaf Extract

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Product Reviews & Sample Feedback

4.1 out of 5 stars, based on 70 reviews 70 Reviews
4.1 out of 5 stars
5 Star
34
4 Star
17
3 Star
13
2 Star
2
1 Star
4
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Most Helpful Customer Reviews

sample!!!!!!!!!!!!

loved this product!!! thank you birchbox for having such great things i can use on a everyday basics :) hope yall keep on coming with these good things

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Love !!!

My daughter and I have long hair and love this product. It makes our hair shiny and silky. Makes a huge difference!

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ehhh

I'm not the greatest at salon caliber blowouts. But this product did help smooth the flyway's. I'm not a huge fan of the smell, or the way my hair feels after but I can tell it's protecting my hair from heat.

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Blow Out

I use this everyday. My hair is shiny and frizz free. I am an abuser of the blow dryer. This is an awesome addition to my hair routine. Pleasant scent. NOT fruity! After blowdry the scent is not overpowering at all. My hair looks polished when I use this product.

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Not One of Number 4's Best

I typically love Number 4 products (i.e. their clarifying shampoo, moisturizing conditioner, and prep spray), but I am not a fan of this one. I've found that this product is too heavy/makes my hair feel sticky, and weights my hair down, no matter how little I use. Instead of this product, I highly recommend their prep spray -- it is very moisturizing, but without the weigh-down effect.

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LOVE

Can't imagine using anything else. It's the perfect weight and I love how easy it makes my hair to style. The perfect amount of shine every time!

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Sad Face

This product made my hair feel so dry that it was very difficult to straighten. It did look nice, but it was difficult to work with.

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Nice

I'm not huge on doing my hair but the one thing I do is blow dry my bangs (I have a terrible cowlick) I use the tiniest amount and it keeps my normally fly away crazy bangs smooth, soft, and doesn't weight them down. I have fine hair so almost anything will weight down my hair but this didn't. The smell is also nice, nothing too offensive to the senses. Overall a lovely product.

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Lightweight

I definitely notice the difference when i use this product. It is really nice and light weight, not greasy or oily at all. When I use this for a blow out my hair looks shiney and fresh and lasts much longer.

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Not a Fan

I tried this product a few times, but honestly never noticed a difference when styling my hair. There wasn't a good feel to the product. The perks are that I didn't notice it weighing down my hair.

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