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.

Liquid VibranceTM Complex (Black Currant, Soy Yogurt, Algae, Yerba Mate), Liquid VitalityTM Complex (Acai Berry, Hibiscus, Mangosteen, Vitamin C), Liquid DefenseTM Complex (Burdock Root, Oolong Tea, Irish Moss, Vegetable Protein), Liquid PurityTM Complex (Lemongrass, Gooseberry, Organic Oatmeal, Golden Seal)

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

quality shampoo and conditioner
SampledPurchased

This product is very gentle on your hair. I have processed and dry hair, every time I shampoo it looks healthier!

5
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Okay shampoo
Sampled

This shampoo smells really good but leaves your hair a bit dry. Would be nice if it came with a conditioner as well

1
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Great shampoo

This is an amazing shampoo. Gets your hair clean and also has a great smell. Great for frequent washing. Doesn't dry out your hair.

4
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Love this shampoo!
Sampled

I used this shampoo and conditioning mask for a couple days in a week. My hair was noticeably softer and more manageable. Very nice product!

5
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Transformational
Sampled

I was a huge fan of this shampoo. I love to save these travel sizes for when I go away for a weekend and used this after a long day in the NYC heat. I hadn't brought conditioner with me and was thrilled to realize this shampoo left my hair feeling super shiny and healthy that I didn't even need conditioner. It's thicker and heavier than normal shampoo, which felt weird at first, but it certainly did the trick.

5
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awesome
Sampled

I totally love the shampoo. It smells absolutely delicious. It lathers really well and you only need a little bit. Would purchase full size even though it's a little more than I would usually spend on shampoo.

5
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Great shampoo
Sampled

I did like this shampoo, it lathered well and rinsed clean. A big indicator to me on the quality of a shampoo is how soft and untangled it is after rinsing. Some cheaper shampoos leave my hair unmanageable until I can get conditioner in it. This left my hair feeling soft and almost as though I had already used a conditioner, yet my hair wasn't weighed down

4
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Fantastic
Sampled

I am in love with this shampoo. I have very thick, curly, frizzy hair and I loved the way it made my hair feel after using it. Another great thing about this shampoo is that you only need to use very little amounts, so it will last you a long time. I know I got quite a few uses out of the little sample.

5
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Great clariying shampoo
Sampled

I have used this several times this summer after going a couple of days with product build up and sweating it out at the gym and outside. A little goes a long way and it cleanses so well. I get shiny and soft hair that is smooth. I think the fragrance/scent of this product could be improved a bit.

4
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Smells great!
Sampled

I used this with the sample of hair masque and they seem to work well together. My hair was improving with texture after.

5
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