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 Bonus Shop

Product Reviews & Sample Feedback

4,452 Reviews
3.8 out of 5 stars
5 Star
1452
4 Star
1472
3 Star
1011
2 Star
287
1 Star
230
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Most Helpful Customer Reviews

Love it

I liked this because when I travel sometimes the showers do not have the best water pressure and this product did not leave my hair feeling heavy or like it took forever to wash out. I would use this again.

4
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My favorite
Purchased

Absolutely wonderful on my long, highlighted hair. Smells awesome and seems to keep my hair in check, very smooth and clean feeling. Will continue to purchase as it is the best conditioner I've found so far.

5
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Number 4 is NUMBER 1 in my book
SampledPurchased

The smell that's what hooks you - it's simply amazing- it's like having a spa in your shower - I don't want to rinse it off my hair -
I use the hair gel -body lotion - shampoo and found the travel sizes in all the items they make while in Boulder,Co.
So now I never leave home with out #4!!

5
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Love
SampledPurchased

Love love love love love love love love love love love love love love love love love love love love

5
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Great Formula
Sampled

Didn't leave my hair super oily the way some conditioners do. My hair is already oily on it's own so I'm always looking for a conditioner that doesn't leave much residue. This one was great.

5
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LOVE IT
Sampled

I love this product def. will purchase. I have had trouble finding a product that left my hair feeling clean and full of body - I tried this product and immediately knew it was what I was looking for - thank yoU!

5
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Love it!
Purchased

I love this conditioner and the matching shampoo. I know it's a little on the pricy side but it last for a long time. I love the smell. Finally a conditioner that doesn't smell like flowers or a coconut.

5
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soft hair!
Sampled

With the shampoo, this is a surprisingly good combo. Made my processed hair soft!

4
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Not a good smell
Sampled

This conditioner works pretty well but I can't get past the smell of it, doesn't smell fresh or pleasant to me.

3
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Nice Conditioner
Sampled

Hydrating and nice smelling this conditioner does what it claims to. Too bad the price tag is so high - can't really justify spending that much on a hair product.

4
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