Dandruff: Causes, Treatment, and Hair Type Rules
Dandruff is a common, non-contagious scalp condition that produces itching and white or yellow flakes…
What Is Hair Porosity? Tests That Actually Work
Hair porosity describes how readily water crosses into the hair shaft and how long it…
What Are Irish Curls? Hair Type, Rarity and Origin
Irish curls describe hair where the top layer sits straighter or looser than the layers…
Hair Botox: No Botox, and Not Always Formaldehyde-Free
Hair botox contains no botulinum toxin and involves no needle. It is a deep conditioning…
How to Protect Your Hair While You Sleep, by Hair Type
Three things damage hair overnight: friction against the pillow, tension from whatever is holding it,…
Wavy Hair Types: 2A, 2B and 2C, and How to Tell
Wavy hair splits into three types. 2A is a loose, open S that only appears…
Hair Shedding or Breakage? How to Tell What Is Happening
Pick one of the hairs off your shoulder and look at the end. A shed…
Sun Damage to Hair and Scalp: What Actually Protects Both
Sunlight does two separate jobs on your head. UVB breaks down the protein in the…
What Is the Most Common Hair Type? The Real Numbers
Straight hair is the usual answer, and for once the usual answer holds up. Type…