How to Put on Hair Pins. Any woman who has taken down an up-do created by her hairdresser knows that a great many hair pins can hide in hair. Thin and flat, hair pins disappear into a hairstyle, holding it firmly while giving the illusion that it's somehow holding itself together.
Arrange your hair in the way you want and hold it in place with one hand.
Insert the tips of the hair pin at the edge of the hair you want to hold in place. Grab a bit of hair between the prongs of the hair pin.
Pinch the hair pin slightly so the ends are closer together.
Rotate the hair pin outward and pick up some hair close to your scalp.
Rotate the hair pin back, picking up a bit more of the hair you want to hold in place.
Push the hair pin into your hair as far as it will go, allowing it to open up when you let it go.