Editor's TipEditor's Tip

This is one area where matching really makes sense. Pair this conditioner with Fleur de Temps Volumizing Shampoo to get the best results.

Number 4 Hair Care

Birchbox Breakdown

Even fine hair needs a good conditioner. This sulfate-free formula detangles and silk-ifies hair without weighing it down. You’ll be left with smooth, manageable hair that is noticeably bouncier. Did we mention it also smells spectacular?

How it Works

There are zero sulfates or parabens in this formula, but there is vitamin B, which helps to fortify and moisturize strands. It also contains the brand’s four signature Liquid Complexes™, which are blends of natural ingredients designed to help protect, purify, strengthen, and revitalize hair.

How to Use

After shampooing, wring out excess water. Apply one or two pumps of conditioner to hair, concentrating on mid-shaft and ends.

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

Product Reviews & Sample Feedback

3,863 Reviews
3.6 out of 5 stars
5 Star
990
4 Star
1229
3 Star
944
2 Star
345
1 Star
355
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

Great for thin straight hair
Purchased

I just got my full size after I got a tiny sample of it I wasn't sure if it was going to work the shampoo was good so I jump in and got the conditioner too. I'm glad I did it works good in my hair and the smell is soft and pleasant

5
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Good for fine hair
Sampled

I have very long, fine hair, and this product provided volume without weighing down my hair. I used it in conjunction with the Number 4 Volumizing Shampoo.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
My hair felt so good
Sampled

I have bland hair and needs to be cut. I loved the way this made my hair feel so good. It brushed out easily and had a good result from this shampoo.

5
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Love this stuff!
Sampled

I had never tried Number 4 products until sampling the volumizing shampoo and conditioner in my Birchbox. I was SO IMPRESSED! This conditioner smells incredible and made my hair soft, silky, and bouncy. I would love to purchase in the future (it's way too pricey for me) once I save up some Birchbox points.

5
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Decent
Sampled

I tried it alongside the shampoo. As with the shampoo the scent is a bit musky, not too sure I enjoy that in my hair care. Overall it conditioned well and left my hair feeling nice but it didn't blow other products out of the water.

2
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Really does pump up the volume
Sampled

I used this along with the volume shampoo. And I was actually amazed that it really does lift your roots and leaves the hair super clean. The only problem I have with the product is the price. I can't see myself spending this much money just to get a little extra volume. All in all, it does work, so it's up to you.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Smells great
Sampled

Made my hair very soft. Smells great. Wish the sample would've been bigger, I only got one use out of it.

3
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Great Conditioner!
Sampled

A very nice conditioner that didn't weigh my hair down. This combined with its matching shampoo did great things for my hair!

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Decent
Sampled

The conditioner smelled very nice but it did not do as much as I would have liked it to do with hydrating my hair.

2
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
ehhh okay
Sampled

This conditioner smells great but thats about all it has going for it. I have long thick hair so I had to use a lot of the product and it still didn't do much. I had to eventually use another conditioner because this one is so thin.

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