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Editor's Tip Editor's Tip

To keep your hair free of product build-up, wash hair with Number 4’s Clarifying Shampoo.

Number 4™ Styling Foam

$30.00 Ships Free
6.7 oz

Availability: Out of stock


Birchbox Breakdown

Our Miami-based friends told us that this multitasking styling foam helps their hair look pristine through a summer’s worth of sweltering heat and tropical humidity. Naturally intrigued, we decided to investigate it for ourselves, and we’re pleased to report it works in all climates. The body-boosting formula provides flexible hold and can be used to define curls or fight frizz. Bonus: it also prevents heat and sun damage and extends the life of your color with loads of nourishing botanicals.

How to Use

Dispense a small amount of foam into hands and distribute through damp hair, starting at roots for added volume and working through to ends. Blow-dry or style as usual.

Water, Polyquaternium-68, PEG-40 Hydrogenated Castor Oil, Phenoxyethanol, Fragrance (Parfum), Ethylhexylglycerin, Decyl Glucoside, Cinnamidopropyltrimonium Chloride, Limonene, Butylphenyl Methylpropional, Linalool, Helianthus Annuus (Sunflower) Seed Oil, Alpha-Isomethyl Ionone, Citral, Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Glycerin, Coumarin, Evernia Furfuracea (Treemoss) Extract, Sodium Ascorbyl Phosphate, Hydrolyzed Soy Protein, 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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Most Helpful Customer Reviews

Great shine and volume

The first time I used Number 4 Styling foam I got several compliments on the shine and volume I had to my hair. I could tell as soon as I finished my blow out that this is a different product for me. I love the way my curls held for several days, having a touch up blow out each morning.

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One of my top products I have discovered from Birchbox!

I use this product everyday. It has been a lifesaver for my fine straight hair. I apply it near the roots in the areas I want a little more volume before blowdrying. It really gives my hair volume and helps with styling, holding curl, etc. The smell is phenomenal too-I absolutely love it. The travel size I owned originally was less than 2 oz and lasted me about 3-4 months, so this full size bottle will last an extremely long time!

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Excellent in extreme humidity

I read the birchbox description of this product, and I was optimistic but still skeptical. I travel frequently to Miami and Puerto Rico. I have fine hair, but it gets super frizzy with even mild humidity. Using this product with a blow dryer guarantees me a frizz proof day. Be careful not to use too much though or it looks like you have dandruff.

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Great styling foam - no frizz!

One of my biggest problems has been frizz. This has really worked to keep the frizz down and keep my air nice and shiny and thick looking. I have wavy hair and it helped hold my waves and give my hair shine and bounce. I am sold on the Number 4 brand. Love it!

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It worked!

I was very pleased with the sample size. It smelled nice & clean. It worked well enough & held my hair nicely for the better part of 8 hours as long as the wind didn't blow at all. What I absolutely didn't like was how sticky it made my hair & the sticky residue it left on my face & neck until my hair was completely dry. It caused a very minor break out at my hair line all 3 times I tried using it. I will say though that I have incredibly sensitive skin. Also if I used even a drop to much of this product when I brushed out my hair a few hours later even if I had just washed my hair a few hours prior my hair would look dirty, greasy, in the areas that had the excess product. It wasn't as if I applied tons of this product. I have very long hair that reaches my butt & I only used about the size of a quarter to fifty cent piece worth of product so in my opinion not enough to make my hair appear greasy. My curly thick texture haired cousin used & loves this though & she had none of the issues I did.

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