News

Coarse Hair: What It Is, How to Tell and How to Care for It

Coarse hair means each strand is wide, not that you have a lot of hair. This guide covers where the line between fine, medium and coarse falls, how to tell, why wide strands tend to hold a set and ...

Why Does My Hair Take So Long to Dry? Causes and What Helps

Why hair takes so long to dry comes down to where the water sits and how much dry, moving air reaches it. We set out what studies have measured on drying times, porosity and blow-drying, and what h...

Fine Hair: How to Tell, Why It Falls Flat and What Helps

Fine hair means each strand is narrow. Here is how to tell whether your hair is fine, why fine hair falls flat and breaks more easily, and how to wash, comb and tie it with that in mind.

Protein Overload Hair: Signs, Causes and What to Do

Protein overload is the haircare name for stiff, rough hair that snaps after a run of protein products. We look at what research does and does not show, how guides tell it from dryness, and what mo...

Why Won't My Hair Hold a Curl? Causes and Fixes

A curl from an iron or hot rollers is a temporary set that drops when it is released before it cools, when damp hair or humid air loosens it, or when the hair is too heavy or, as stylists find, too...

Hair Porosity Test: How to Check Low and High Porosity

A hair porosity test gives a rough idea of how readily your hair takes up water and lets it go again. Here is how the float, strand and spray tests work, how guides usually read the results, and wh...

How to Wear a Bonnet (and Keep It On at Night)

How to wear a bonnet: putting it on step by step, where your hair goes for each hair type, how firm the band should be and how to keep the bonnet on at night.

Can You Wear a Bonnet With Wet Hair? How Dry Is Dry Enough

Can you wear a bonnet with wet hair? Not while it drips: how dry is dry enough, how to get there on a short evening, what is known about your scalp, and how to look after the bonnet after a damp ni...

Hair Oil Overnight: How Long to Leave It In, and Masks Too

Hair oil overnight: what oil does in hair, how long to leave it in, which hair it suits, why a mask's timing follows its label, and how to keep oil marks off your pillow and your silk.

How to Prevent Bed Head: Causes, Habits and Fixes

Bed head is hair that has set overnight in the shape it was pressed into, often with frizz and tangles on top. This guide explains the three causes we see, how to avoid it at night and how to fix i...