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, over- styled hair back to life. It’s loaded with moisturizing natural ingredients that calm frizz and restore fried ends and it also protects from future damage. Don’t tell our hair stylist, but this product is the reason we can go so long in between trims!

How it Works

This rich formula helps to rebuild hair inside and out: 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 current to moisturize, protect, and strengthen hair.

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

4,403 Reviews
3.8 out of 5 stars
5 Star
1427
4 Star
1461
3 Star
1002
2 Star
286
1 Star
227
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Most Helpful Customer Reviews

Hair
Sampled

I have received this product before and was disappointed to receive it again. I did not find this product very good at cleaning nourishing and replenishing.

1
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Love it!
Sampled

My fine Gary tends to be dry and can be brittle for a multitude of reasons. This conditioning product really left my hair silly and smooth without the build up. It's a tad pricey but, I think it's worth it.

5
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SO silky smooth!
Sampled

This conditioner did wonders for my split ends! My hair looks healthy, repaired, shiny, and strong! Highly recommend! The only problem is the residue it leaves when I rinse it off, but nothing soap can't fix!

5
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Wonderful
Sampled

Great great great great must have item,
Great for dry hair

4
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Alright
Sampled

This was just okay not bad not good. I didn't feel like it would be worth the money. At least it didn't make my hair greasy. I also really hate the sample packaging because its really hard to open in the shower and since it has no lid then it just spills the rest all over the shower.

3
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Greasy
Sampled

I liked the softness it gave my hair, but after a few days I noticed my hair getting more greasy than usual. I have really dry hair and need all the moisture I can get, but this seemed to be too much.

3
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The sample size wasn't enough to judge
Sampled

I was hoping it would be as wonderful as the shampoo but unfortunately the size given in my birchbox really only allowed for one or two uses. Smells goos though.

3
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No4
Sampled

The smell of this conditioner (and shampoo) made it hard for me to like the product. The product was not outstanding enough to overcome the smell for me. I could even smell it after my hair was dry.

2
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feels great. looks great
Sampled

Sometimes I skip on conditioner. I tried this and it made my hair look great and my girfriend liked the way it made my hair look and smelled good to boot.

5
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Smells amazing
Sampled

This was a great conditioner-it smells absolutely amazing and doesn't weigh your hair down.

5
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