sade087

I'm sort of recycling part of  a previous post . Recycling is good though, right?  ©Science-y Hair Blog 2013 Full sunlight on your hair can be bad news if you get too much. When hair is exposed to 200 hours of ultraviolet radiation from sunlight, the cuticle edges begin to fuse and as a result the total cuticle surface “shrinks.” As it shrinks, tiny openings are created where cuticle once was and these are known as "porosities." It's like putting a piece of plastic on a hot stove or in the oven - it shrinks as it heats and as it is assaulted by ultraviolet light. After 400 hours of  ultraviolet  light / sun exposure, porosity continues to increase with further cuticle damage. After 1200 hours, the cuticle becomes rigid, brittle, and may crack under stress, leading to even further increases in porosity.  ©Science-y Hair Blog 2013 If your hair grows the "average" of up to 6 inches per year (15 cm) and you get sunlight for even half an hour per day, during half...

I work outdoors, sometimes all day for a week at a time in spring, summer or autumn. So I know a thing or two about what makes an ideal hat. What does this have to do with hair, skin and the meaning of life? Bear with me, please. 1) A proper hat protects your eyes. Shading the eyes prevents migraines, cataracts and squinting which can cause headaches. ©Science-y Hair Blog 2013 2) A good hat keeps the sun off your scalp and hair. Hair protects the scalp. Hats protect the hair and scalp.  When hair is exposed to 200 hours of ultraviolet radiation from sunlight, the cuticle edges begin to fuse as the cuticle “shrinks.” As it shrinks, tiny openings are created and these are known as "porosities." After 400 hours, porosity continues to increase with further cuticle damage, and after 1200 hours, the cuticle becomes rigid, brittle, and may crack, leading to even further increases in porosity. If your hair grows the "average" of up to 6 inches per year (15 cm) and you get s...