Editor's TipEditor's Tip

Post lather, spritz strands with a leave-in conditioner like Number 4 Super Comb Prep & Protect.

Number 4 Hair Care

Birchbox Breakdown

At the end of a long day we could all use a fresh start—the same goes for our hair. When product buildup and styling stress leave your locks feeling dull, use Number 4™ Clarifying Shampoo, subtly scented with white freesia, golden amber, and warm musk, to gently cleanse without stripping moisture or color.

How it Works

Rich in vitamins and antioxidants, this clarifying shampoo restores health and shine to overworked tresses. Black currant and soy restore vibrancy; acai berry and vitamin C deliver youth-boosting antioxidants; Oolong tea and Irish moss defend against environmental damage; and lemongrass and oatmeal gently cleanse and purify. This shampoo is also vegan friendly and free from sulfate, sodium chloride, and parabens.

How to Use

Squeeze one pump (a little goes a long way) of the water-activated formula into the palm of your hand and work into a thick lather. Deposit the lather evenly through damp strands and rinse thoroughly. Use daily for best results.

Water, Decyl Glucoside, Disodium Cocoyl Glutamate, PEG-120 Methyl Glucose Dioleate, Fragrance, Polysorbate 20, Sodium Cocoyl Glutamate, Gluconolactone, Polyquaternium-10, Sodium Benzoate, Benzyl Salicylate, Butylphenyl Methylpropional, Linalool, Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Helianthus Annuus (Sunflower) Seed Oil, Glycerin, Sodium Ascorbyl Phosphate, Hydrolyzed Soy Protein, Macrocystis Pyrifera Extract, Ribes Grossularia Fruit Extract, Ribes Nigrum (Black Currant) Leaf Extract, Yogurt Extract, Arctium Lappa Root Extract, Avena Sativa (Oat) Kernel Extract, Camellia Sinensis Leaf Extract, Chondrus Crispus (Carrageenan) Extract, Cymbopogon Schoenanthus Extract, Euterpe Oleracea Fruit Extract, Garcinia Mangostana Peel Extract, Hibiscus Sabdariffa Flower Extract, Hydrastis Canadensis (Golden Seal) Root 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

88 Reviews
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Most Helpful Customer Reviews

Too gloopy

Entirely too gloopy for my thick hair. I used about a quarter-sized amount for shoulder-length hair and couldn't get it to "emulsify" like the bottle says. It lathered poorly and felt altogether heavy. Also the fragrance was overpowering and unpleasant, like the perfume sample you throw out from catalogs.

2
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eh. was just OK.

I didn't particularly care for this shampoo. Maybe it was because it was clarifying, but my hair felt like straw after using it. I did find the instructions on how to use it pretty comincal - it said to add water and emulsify.

3
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Okay shampoo

This is a very concentrated shampoo, a little goes a long way. I wasn't crazy about the way it smelled, and my hair always felt super dry after using it. It's a no go for me.

3
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Smells Amazing.

Can't get enough of it. Possibly my new favorite. Wish the sample size would have been a little bigger though.

5
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Okay shampoo.

It's okay. A little too liquidy so you have to use a lot. Didn't see any special effects after 1-2 uses.

2
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Effective But Strong Smell

I wear a LOT of hairspray, hair powder and haircare products living in Florida, and being in TV. So I like using clarifying products to get all the gunk out every other day. This shampoo is very effective, and it'll be squeaky clean. The scent though, is very perfume-y and strong, which is not necessarily a scent I like to be lingering after washing the hair is over!

3
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Great for all types

I'm usually pretty wary of different shampoos and conditioners because of my thick course hair but surprisingly did the job while moisturizing

4
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Good clean hair

I loved this as a sample so much, I squeezed the last drop out of it last week. Thoroughly cleaned my hair and was gentle on my sensitive scalp ( really liked that it was vegan and gluten free- important for someone with these allergies). It smelled luxurious and left my hair clean and soft. Even helped tame frizzies!
I wish it came in a smaller size or had a lower price point. It's just too expensive for me.

4
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love this brand

I loved this shampoo and I would like to buy it but it is way to expensive for me to purchase .

4
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Good For A Clarifying Shampoo

The thing that would put this product above the rest as far as clarifying shampoos go is the scent. It's very similar in scent to the Beauty Protector Shampoo & Protect product from the May Birchbox. The formula moved easily for me; it didn't get stuck in the bottle and wasn't hard to maneuver, like the Beauty Protector sample was. Because it is a clarifying shampoo, it did dry my hair out. It cleansed it for sure, but my hair was definitely dried out, so that's why it gets 4/5.

4
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