We walk through why hair varies so much across all humans. Have you ever wondered why your hair grows out of your scalp the way it does? Maybe you've also wondered why our body hair isn't as dense as ...

Ever stared at a new shampoo bottle, brimming with promises, only to feel a pang of dread wondering if it’s just another ...

What Are the Different Hair Types? Hair comes in four main types: straight, wavy, curly, and coily. Each hair type has its own unique characteristics. The four types are broken down into subtypes (A, ...

There are many different types of hair, including straight, curly, wavy, and coily. Depending on a person’s hair type, they may need to follow different care instructions, including what type of ...

Your hair’s relationship with moisture affects everything from product selection to styling success. Hair porosity, or how well your strands absorb and retain moisture, can explain why some products ...

Millions of people religiously apply conditioner after every shampoo, invest in expensive deep conditioning treatments, and follow elaborate hair care routines, yet still struggle with persistently ...

As WIRED’s resident straightening iron specialist who has tested nearly 30 models for our guide to the Best Hair Straighteners, it probably goes without saying that I have naturally curly hair. Given ...