The contents of modern products, from toothpaste to shampoo, can sometimes make you feel like you need a degree in chemistry to identify them. What do the tongue-twisting parabens listed on the label do?
Tattoos, like other types of body art, are a common form of self-expression. If you've ever considered getting one, though, some concerns may have crossed your mind. That needle, for instance, pricking your skin and marking it with dye -- is it safe?