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

More for You!
  • Free returns within 90 days of purchase
  • Extra samples and gifts in the Bonus Shop

Product Reviews & Sample Feedback

86 Reviews
4.1 out of 5 stars
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41
4 Star
23
3 Star
14
2 Star
4
1 Star
4
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Most Helpful Customer Reviews

This stuff is where it is at for wavy hair
Purchased

I have very wavy hair that gets completely out of control in the summer - the first time I used this product I blew my hair dry and went to a cookout in the new england august heat and humidity and my hair stayed perfect - no lie. Normally it would be wavy again by the time I got from the house to the car - this stuff really works. The texture is a little sticky so make sure you only use what you need on damp hair and then dry right away so your hair doesn't get tacky. I have long hair and one to one and half pumps is more than enough for me. I also have fine hair and it doesn't weigh it down. Almost time for bottle number 2!

4
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Love!
Purchased

I have naturally curly hair and I'm always looking for a great blowout lotion. I never received this product in one of my boxes, but I read the reviews and decided to give it a go. I love it. It gave my hair a different texture than I'm used to, but it's a good thing. I can wear it smooth, but with a little crunch.

5
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bomb.com

What can I say???? Number 4 is my favorite line of hair products. While I think it is far too expensive, when I get number 4 in my sample box, I squeal for joy. After having a child, and 2.5 years later, my hair is WEIRD! Hormones!! Number 4 gives my hair exactly what it needs and this is no exception. My hair is soft, shiny, and manageable with this product. Thank you Number4!!

5
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Not for me
Purchased

I bought this based on the reviews and was disappointed. It smells funny, and I don't notice a difference, my hair isn't shiny or softer than if I used something else.

2
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MUST HAVE
Purchased

I can not emphasize enough how wonderfully this product has worked and how lovely the scent is. Forget going to the salon for a blowout - you can do it yourself from home with the same results!

5
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Pretty Nice
Purchased

I was super excited to try this product after hearing that it is life changing. However, it has not been life changing to me. My hair typically takes up to 15 minutes to dry and this only cut it down by about 3 minutes to where it takes me about 12 minutes to dry it. I do love all of its added benefits and how my hair looks and feels after. But, the main purpose for me buying it was to see if it would cut my dry time in half and it didn't.

4
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Loveeee!
Purchased

I had heard wonders about this product and was so excited when I finally received it. I am not one to like to spend too too much time on my hair so this product is perfect!! I have long hair and I was able to blow out my hair in 15 minutes! It is such an amazing time saver! It's great at controlling frizz which is my biggest issue! Highly recommend!

5
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Love this product
Purchased

Great product, does a great job of protecting my hair and keeping my hair tame without losing volume. I plan on continuing to use this product.

5
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Works great, but doesn't have a pleasant smell
Purchased

I love the way that this works. It makes drying my super-thick hair easier and less time consuming. However, it smells odd almost like it is a couple of years old.

4
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It's ok
Purchased

It's not my favorite blow dry lotion. The smell is just ok. It does make my hair soft, I am not sure if it extends the like of a blow out. The bottle size is great for the price.

3
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