Editor's TipEditor's Tip

Get this conditioner, its hydrating shampoo counterpart, and nourishing body lotion in the Dark Reef Collection.

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 pump through the ends and mid-length of strands. Rinse completely and style as usual.

Water, Cyclopentasiloxane, Cetearyl Alcohol, Stearyl Alcohol, Cetrimonium Chloride, Behentrimonium Methosulfate, Fragrance, Glycereth-26, Dimethiconol, Divinyldimethicone/Dimethicone Copolymer, Gluconolactone, Cetrimonium Bromide, Panthenol, PPG-3 Benzyl Ether Myristate, Jojoba Esters, Quaternium-91, Amodimethicone, Hydroxyethylcellulose, Cetrimonium Methosulfate, Sodium Benzoate, C11-15 Pareth-7, PEG-45M, Laureth-9, Glycerin, Butyrospermum Parkii (Shea Butter), Aminomethyl Propanol, C12-13 Pareth-23, C12-13 Pareth-3, Cinnamidopropyltrimonium Chloride, Trideceth-12, Citric Acid, Cinnamyl Alcohol, Helianthus Annuus (Sunflower) Seed Oil, Ethylhexyl Methoxycinnamate, Sodium Ascorbyl Phosphate, Butylene Glycol, Helianthus Annuus (Sunflower) Seed Extract, Hydrolyzed Soy Protein, Macrocystis Pyrifera Extract, Ribes Nigrum (Black Currant) Leaf Extract, Yogurt Extract, Tocopheryl Acetate, Hydrolyzed Vegetable Protein PG-Propyl Silanetriol, Arctium Lappa Root Extract, Camellia Sinensis Leaf Extract, Chondrus Crispus (Carrageenan) Extract, Euterpe Oleracea Fruit Extract, Garcinia Mangostana Peel Extract, Hibiscus Sabdariffa Flower Extract, Ilex Paraguariensis Leaf Extract

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

Product Reviews & Sample Feedback

82 Reviews
3.9 out of 5 stars
5 Star
37
4 Star
20
3 Star
15
2 Star
3
1 Star
7
my profile
people who
purchased
sampled
Hair type
Curly
Dry
Fine
Frizzy
Kinky
Normal
Oily
Straight
Thick
Wavy
Hair color
Brown
Blonde
Black
White or gray
Red
Other
Age
17 & under
18-24
25-34
35-44
45-54
55 & over
Apply

Most Helpful Customer Reviews

Luxurious smell

I absolutely love the smell of this conditioner! The only way I can describe it is it makes my hair smell like the Ritz Carlton.
I gave it 3 stars because, although I loved the smell, I didn't see it make any difference with my hair. It actually seemed to dry it out a little.
But, I'm excited to get the body lotion so I can smell like this all day!!

3
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Wonderful conditioner

This along with the shampoo, are pure indulgence . There is no need for a styling product after using the trio of,the shampoo,,conditioner and the comb/blow dry prep. I straighten my hair and I believe this product has actually helped with the longevity ,and time between straightening treatments. Love, love, LOVE

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
For the price? Meh

I just tried this last night. A lot of people were complaining about the "masculine smell." I acutally like that it kind of smelled like a men's cologne. It doesn't linger, it just made it smell like a very handsome man was helping wash my hair. And it does feel very nice and my hair appears to have dried shinier and healthy looking.
But, I can't be sure if it's from this product or the stress I am currently enduring, but it feels like a bit more of my hair than usual has been falling out. It's nothing to panic about, just something annoying. If you get a sample (like I did), give it a shot. But for $78? Pass.

3
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Obsessed

What you need to know is that I have 1. curly hair 2. coarse curly hair 3. long, coarse, dry curly hair - and sometimes I straighten it.

When I say I've used everything under the sun, believe me I have. Name the brand or protect, I've tried it. And I'm OK with some of them, hateful of others and tired of paying over $30 for the ones in the middle. This conditioner was a game changer for me!

The smell is strong, but actually enjoyable - The texture is neither too runny or thick - and man, did it soften my locks. I'm definitely buying a full-size version and my only curiosity is whether, over-time, the silicone (which I usually stay away from) will cause build up and weigh down my curls. Totally willing to take the risk after using the sample!

5
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
fantastic! works well and smells great

I love this conditioner. It smells fantastic and worked great. I felt like it left my hair clean but easy to brush. I was sad when I ran out.

5
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Great!

Fantastic products.... I used both the shampoo and conditioner and my hair feels and smells fantastic. However, $78 just for conditioner is a bit much...

5
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Just Okay

The smell is a little weird. I like that it didn't leave any residue in my hair, but was not overly impressed. Comparable in quality to higher end drug store brand.

3
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
#4 hydrating conditioner

Although the sample said ultra-concentrated, i found it to be very thin in consistency. I have conditioners that work much better for about a tenth of the price. Maybe after a few uses it would have made a difference, but the sample was a one use foil packet. I think I'pass on this one.

1
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Only to go with the shampoo

I really enjoyed the shampoo that goes with this product, however, the conditioner sample was just okay. I didn't use that much each time (I usually don't for conditioner) and I don't think it really did much. In other words, I felt like it could have been any old bottle of conditioner instead of one that is $78.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
This stuff smells awful!

I was excited to try this but I couldn't get past the smell! It smells like awful men's cologne! Being a female I don't want to smell like men's cologne!

1
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No