- Number 4 Hydrating Hair Conditioner, Moisturizing Deep Conditioner for Dry, Damaged Hair, 8.5 oz

I use the moisturizing shampoo, conditioner, leave in serum and thermal spray by this brand. My hair feels like feathers.....this is so lightweight. The serum was the real game changer it made my hair so luxurious. The bottles are small but very concentrated you dont need much at all especially with the conditioner only a tiny amount. Your hair will smell good for days.

These products are really good. They are pricey but last a long time and are good for my hair.

This stuff smells so great and leaves my hair feeling amazing. I had received a sample of it and had to have the full size.

I’ve used the shampoo, conditioner, and leave-in conditioner from N4 for years. I absolutely love them all for my hair AND I love the scent of the products as well. The scent has become a part of “my signature” scent!

I love this brand. The shampoo and conditioner is so rich, creamy, moisturizing...leaving my hair silky soft (and I have very dry, wiry, coarse, grey aging hair.) I don't need to use a leave in conditioner after using this product, that's how effective it is. Yes, it's expensive, but you get what you pay for. Be careful, don't use too much, as it is very thick. I would say use between a dime size to a quarter size, depending on how dry, damaged or aged your hair is. Use from mid shaft to ends, not on the roots. Leave it in while you shower, then rinse, leaving a little in the hair. Great results!

Let me start with, I have been on the search for hair products that will do what I want it to do. I have very fine, thin, and blonde hair so most products just weigh it down or make it look dirty in less than 24 hours of washing. I received a sample size of the Number 4 Hydrating Shampoo & Conditioner in a BirchBox and I fell in love. My hair looks fresh for over 48 hours now. It smells fantastic. It does cost a little more but it will go much longer than cheaper products. Just don't use as much!

My favorite!

Best shampoo and conditioner I've ever used (and I have tried a ton - as we all have). This is one of the primary product lines my stylist uses and she sells it - although at a considerable mark-up. I have fine, thin hair and product enhances the volume, feel, and health. I do not use any other products on my hair (no hairspray, gel, volumizer, etc.). I also love there are no crazy chemicals used to make the product. It's concentrated so use sparingly. With this I wash my hair once - maybe twice a week so it goes a long way.