Josh Rosebrook

Josh Rosebrook is a celebrated hair stylist who has created an eponymous line of hair products that are as good for the scalp as they are for the hair — and they are coveted by celebrities and stylists alike.


Shampoo: It seems like it should be the simplest step in hair care, yet contradictory advice about it seems to be coming out of everyone's ears. To clear things up, we approached Josh Rosebrook, celebrity hair stylist and creator of the ultra-pure, super-hard-working Josh Rosebrook line of hair care products. He has spent 17 years working on tresses and observing just what shampoo can do (or not do) to benefit both hair and scalp.


Ayla: How often should you shampoo? Can you wash your hair every day?

JOSH: If you’re using a clean, pure formula, yes! Otherwise, no.

Here’s why. Conventional shampoos remove critical natural oils from the hair and scalp, then coat it with silicones that build up on the hair. Plus, conventional shampoos often contain sulfates. Sulfates can over-clean and throw off the scalp’s pH balance, leaving you extra vulnerable to dermatitis.

Hair stylists often notice that when their clients’ hair and scalp are shampooed daily with conventional products, the scalp becomes dry or flaky and imbalanced, and the hair turns limp or lackluster.  To help naturally restore balance to scalp and hair, they’ll instruct clients to limit washing to once or twice a week.

But by changing to pure and clean hair care formulas, the results can be dramatic — and you can wash your hair more frequently. Natural cleansing agents have a kind of intelligence where they don't over-clean and remove protective natural oils that help maintain the right moisture and pH levels in the hair and scalp. Adding specific plant extracts to those cleansing agents helps stimulate the cells in the follicle, and increased circulation in the scalp and follicle is a very important part of creating and maintaining healthy hair.

I recommend that my clients who use my products wash their hair as often as every day, or at least every other day, and I continue to see incredible results. This regular cleansing cycle removes excess oil, dirt and pollution from the hair and scalp. (Most cities have pollution in the air, and oil attracts dirt that accumulates quickly; when the scalp has a buildup of this dirt and oil, the hair’s delicate follicles can weaken and, over time, inhibit hair growth and encourage thinning.)


Ayla: What about dry shampoo? Do you think it’s good for the hair and scalp?

JOSH: I don't encourage the use of dry shampoos, naturally formulated or not. Dry shampoos do not allow the scalp and follicle to breathe and function properly. As convenient as they are, dry shampoos just disguise and add to the dirt and pollution. Shampooing every day is great for your scalp and hair when approached with the right product and philosophy.


Ayla: What’s your take on the idea that shampoos and conditioners need to be switched up from time to time because they stop working?

JOSH: That’s a funny concept to me. What “works” doesn’t stop if it truly worked in the first place.

Conventional hair products can very much appear to change hair for the better, but only over the short term. Over time, for example, silicone builds up on hair, which actually causes breakage because it’s unable to absorb as much moisture.

I believe that well-formulated, natural shampoos and conditioners work differently from conventional chemical formulations. They’re gentle and intelligent; they work with your body. And shampoos and conditioners like this don't stop working!


We've tested the Josh Rosebrook line extensively and have sent it to top stylists to try out, too — and it's invariably one of those lines that everyone falls in love with. Check out the full Josh Rosebrook hair care product line at Ayla here, and one of our expert stylist testers' favorite products (and an alternative to dry shampoo) here.


Any topic discussed in this article is not intended as medical advice. If you have a medical concern, please check with your doctor.