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

Love!
Sampled

I love this shampoo it has a great smell and keeps my hair clean for days and less oily than others i have used in the passed!

5
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AMAZING
Sampled

I absolutely loved this sample! I was able to use it for multiple washes, and was so sad when I ran out. The smell is amazing. It made my hair feel so clean and soft, that I didn't feel the need to use conditioner (and I always use conditioner). I hope to get more products from this brand, and I can't wait to splurge on a regular size bottle of it. I just hope that 8.5 oz can last me a while...

5
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Good
Sampled

While I loved that this product did do exactly what it said it would do. I cannot get past the over powering fragrance. Perhaps a non smelling version I need to find. Thank you for a cool product however.

4
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It's alright
Sampled

Don't love it, but I don't hate it either. The size was perfect to take with me on the plane.

3
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Squeaky Clean
Sampled

I like to use a clarifying shampoo every so often, not daily. I really liked this one. The scent was nice and any product buildup was gone.

4
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Clarifying Shampoo
Sampled

All of the Number 4 products I have had the opportunity to try are great. This shampoo is thick and lathers really well. It smells great and it did a great job getting my hair back to basics and deep cleaning it. Definitely recommend it.

5
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Super great shampoo
SampledPurchased

LOVE this shampoo, after receiving it as a sample I had to actually buy myself some. I use it once a week to help remove extra build up. Smells amazing :-)

5
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It's ok
SampledPurchased

I was a little disappointed with this shampoo, I have med length hair and it takes about 3 to 4 pumps to get a good lather and I do see any clarifying effect I get on other brands. It does smell good! But I won't buy this again for clarifying.

3
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lost BB in mail...didnt get this sample
Sampled

BUT, I have tried this product before and i really like it
works like any other clarifying shampoo, maybe cleans a little "too well" for my hair, but all in all. Good clarifying shampoo!

5
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Curls have returned!!!
Sampled

Shortly after my last cut, I pulled out my sample and gave it a go. I let my hair air dry and the curls were abound. Having had a hair cut with a new stylist, I chalked the curls up to the technique. On my next wash day, I returned to my old ways and old shampoo. The curls had gone. :( Several weeks had gone by and no more curls. Getting ready for a special night, I pulled out the sample again for use, and the curls were back!!! Love having the best of both worlds again.

5
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