Editor's TipEditor's Tip

For soft, healthy locks pair with Number 4’s Lumiere d'hiver Reconstructing Masque. The rich conditioner adds a serious dose of moisture to dry strands.

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 a small amount (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

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Most Helpful Customer Reviews

Great clarifying shampoo!
Sampled

I'm not crazy about the current clarifying shampoo I'm using (I alternate with two other shampoos throughout the week), so I was happy to receive this sample in my March sample box. LOVED how it cleansed all the styling product residue without drying out my hair and making it feel "stripped."

5
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Clarifying shampoo
Sampled

All I can say is wow! I've been on a hunt for a good clarifying shampoo and I have now found it thanks to Birchbox! This stuff works like a dream, it makes my hair feel soooooo clean and soft. It gets rid of all residue (I have well water, therefore I have iron and other minerals in my water). I will definitely purchase the full size of this for sure.

5
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Good clarifying shampoo.
Sampled

For a clarifying shampoo I think this one is pretty good. It does what it's supposed to and as usual the smell is great. The main detractor for me to really love this brand/product line is the cost.

4
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not for curls
Sampled

First off, I want to start by saying that the smell of this product is really nice and subtle. It is also a truly concentrated product - a little goes a long way.

I've tried this twice so far. It gives my curly hair nice volume, but I lose a lot of the definition of my curls. I feel like I might use this very rarely to clean a lot of styling product out of my hair after a special occasion, but it is not an every day (or even evry week) product for me.

4
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Smells ok and moderately effective
Sampled

I was excited to try this because the packaging looks cool and inviting. However it was too rough on my hair, didn't seem effective and the smell was just okay.

4
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So soft!
Sampled

This is the first shampoo that has left my hair feeling like I used conditioner instead. And the feeling lasts! Normally shampoo is an after thought or just to help my conditioner work better, but I think I've found a stand alone shampoo!

4
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Shampoo
Sampled

My hair didn't feel all that clarified afterwards, just very dry. This shampoo has an extraordinary smell though!

3
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Can never go wrong with a No. 4 Sample
Sampled

Smells great. Works well. My hair felt clean and it styled well in conjunction with my masque sample.

5
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Surprised how good this really was!
Sampled

I must be honest, I've received Number 4 shampoo and cond. in my BB before and I was not impressed - however this clarifying shampoo worked great on my hair.

3
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Seems fine
Sampled

This shampoo seems fine. It was honestly hard to tell whether or not it really made a difference or was any more effective than the usual shampoo I use. The sample was a bit small. I'll likely only get 2 or 3 uses out of it so it's a bit challenging to make a proper assessment. At first, I didn't like that it didn't lather much. Although after a bit of massaging into my scalp, it did work up a good lather. So it felt cleansing; but again, not sure it's any more effective than my everyday shampoo.

3
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