Insights

image representing oil buildup and washing to reveal the cleaner underlayer.

How often should you wash your hair?

Sebum sits on your hair. 18-MEA is part of it. Shampoo can remove the first and cannot touch the second — and once you see the difference, most of the...

How often should you wash your hair?

Sebum sits on your hair. 18-MEA is part of it. Shampoo can remove the first and cannot touch the second — and once you see the difference, most of the...

Does dry shampoo clean hair?

Does dry shampoo clean hair?

Everything a wash would have taken is still up there — and that's a smaller problem than it sounds. Both the promise and the panic overstate what a powder can...

Does dry shampoo clean hair?

Everything a wash would have taken is still up there — and that's a smaller problem than it sounds. Both the promise and the panic overstate what a powder can...

Illustrating the surface difference but identical base, similar to coconut oil grades.

Coconut oil: does the grade matter?

Refining strips 99% of coconut oil's vitamin E — which turns out not to matter, because the part that actually does something to your hair isn't touched.

Coconut oil: does the grade matter?

Refining strips 99% of coconut oil's vitamin E — which turns out not to matter, because the part that actually does something to your hair isn't touched.

Oiling an oily scalp — and a healthy one

Oiling an oily scalp — and a healthy one

The same thing that makes oil worth putting on a dry scalp is the reason it can backfire on an oily one. It's one property, running in two directions.

Oiling an oily scalp — and a healthy one

The same thing that makes oil worth putting on a dry scalp is the reason it can backfire on an oily one. It's one property, running in two directions.

Hair oil: some work on surface, some go deeper.

What Hair Oil Does — and What It Doesn't

Hair oil does two jobs: conditioning the hair fibre and, in some cases, supporting the scalp. Separating the two explains which claims are evidence-based—and which are not.

What Hair Oil Does — and What It Doesn't

Hair oil does two jobs: conditioning the hair fibre and, in some cases, supporting the scalp. Separating the two explains which claims are evidence-based—and which are not.

Porosity test illustrated with mist absorption

Hair porosity explained (high vs low)

Most porosity advice starts with a float test in a glass of water — which doesn't actually work. The more reliable tell is your hair's own history. Here's what low...

Hair porosity explained (high vs low)

Most porosity advice starts with a float test in a glass of water — which doesn't actually work. The more reliable tell is your hair's own history. Here's what low...