Editor's TipEditor's Tip

For a mini hair treatment, leave on for one minute and then rinse as usual. Use the Lumiere d’hiver Reconstructing Masque once a week to keep hair healthy.

Number 4 Hair Care

Birchbox Breakdown

This decadent conditioner helps to bring dry, overstyled hair back to life. It’'s loaded with moisturizing natural ingredients that calm frizz, restore fried ends, and protect from future damage. Vitamin B5 and jojoba help to nourish and hydrate dry strands, while Number 4’'s™ proprietary Liquid Complexes™ use potent natural ingredients like acai berry, vitamin C, and black currant to moisturize, protect, and strengthen hair. Don'’t tell our hair stylist, but this product is the reason we can go so long in between trims!

How to Use

Use on clean, damp hair. Depending on hair length and thickness, work one or two pumps through the ends and mid-length of strands. Rinse completely and style as usual.

More for You!
  • Free returns within 90 days of purchase
  • Extra samples and gifts in the Men's Bonus Shop

Product Reviews & Sample Feedback

4,429 Reviews
3.8 out of 5 stars
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1466
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1005
2 Star
287
1 Star
230
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Most Helpful Customer Reviews

Not excited
Sampled

I did not notice any major change or effect. I am not interested in receiving anymore samples of shampoo or conditioner unless it is bumble and bumble of course :)

1
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Good conditioner
Sampled

This conditioner felt lightweight but moisturizing. It was very gentle and smelled nice without being overly fragrant. My only complaint is that my hair felt a bit waxy afterward, but I used the shampoo and conditioner together so it's hard to say which one left it feeling waxy. I would use it again!

3
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Too pricey
SampledPurchased

I like this shampoo but think it is way too pricey. I have really thick, long hair so I need at least double what a normal person uses when they wash. I don't think this is worth the price.

3
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The best!
Sampled

This stuff is amazing. I have really picky hair. This conditioner made it soft and hydrated. I've never had a conditioner that worked this well. The full size is expensive, but I hope to buy it one day.

5
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Love it!!
Sampled

My dry, color-treated hair felt silkier and smoother after using this product, without feeling heavy and weighed down. Love the shine! It was almost like I went to the salon!!

5
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LOVE THIS BRAND!
Purchased

Even though I never got a sample of this conditioner, I loved the leave in product and bought it. Then a week later I bought the hydrating conditioner. I was so happy I did. A little bit goes a long way. The price point is perfect. After using this conditioner and the Number 4 leave in, I dry my hair and it it feels so smooth. I would recommend this to anyone who has thin, limp or dry hair. I will keep ordering this.

5
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Miracle worker!

This leaves your hair silky and soft! It gave my hair a bounce that I had forgotten it could achieve!

5
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Double shot!
Sampled

Not only did we get the shampoo but the conditoner too! This stuff feels and smells amazing. My boyfriend ran his fingers through my hair plenty of times!

5
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Fabulous Conditioner
Sampled

I love this. Super Moisturizing. Leaving my thick hair soft and manageable. Fabulous! It's light weight and not greasy. Great smelling as well!

5
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Wonderful Surprise
Sampled

Wonderful complement to my regular routine. Worked incredibly well with the shampoo as well. I like my drugstore shampoo but this was truly a treat. I would love to buy this!

5
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