8 things you didn't know about your hair


If you think you know everything there is to know about your hair, think again. These 8 facts may just blow your mind, or at least make you rethink the extent of your hair knowledge.

When wet, a healthy strand of hair can stretch an additional 30% of its original length.

Hair grows slightly faster in warm weather, because heat stimulates circulation and encourages hair growth.

Hair contains information about everything that has ever been in your bloodstream, including drugs.

Black is the most common hair color. Red is the rarest and only exists in about 1 percent of the world’s population, with blonde hair found in 2 percent.

Balding only begins to become visible once you’ve lost over 50 percent of the hairs from your scalp.

A single hair has a lifespan of about five years.

Eighty percent of Americans wash their hair twice a day.

Each strand of hair can support up to 100 grams in weight. Your entire head of hair could support the weight equivalent to two elephants.