For people born without curly hair who desire waves and volume, curlers are a God send. A good wash and blow dry can send you on your way to having a luxurious mane of hair in a couple of hours. If you don't think can beat the heat and have a little more time to spare, you can put rollers in overnight. In both cases, you eventually unfurl your hair from your rollers to enjoy your new hair. At least until the staying spray gives out.
But if you're more focused on volume, or are afraid that your hair is too thin to be sectioned off into parts to be rolled, there is another option. With a bit of clever maneuvering and tucking, you can keep your rollers in.
If you've ever heard of a pompadour, you probably have some idea of what I'm talking about. Rollers can be used to pile sections of your hair on top of other sections. When done correctly, it can make it look like you have a fuller head of hair. You really just have to make sure your hair is evenly sectioned over your rollers. The rollers themselves also have to be pretty small. No bulky hair dome rollers over here!
I recommend the smaller, foam type rollers you usually see at a dollar store. If you have natural hair, you might want to skip out on the foam. See if you can find some similarly sized, foam free rollers. Oh, and you're also going to need some bobby pins. This technique requires total discreetness. Try and find bobby pin that match the color of your hair if you can. It's okay if you can't, but having color matched bobby pins puts up a safety neck if you incorrectly pin one of the rollers. Ready? Okay, let's go!
Grab the middlemost section of your hair. Part the other sections of your air away from it, making sure to tie them off with bands. You should have five parts in total: the front part, the left part, the right part, the back part and the part above the nape of your neck. The biggest part should be the front part, and the smallest part should be the middlemost one we're about to play with now.
Hold the middlemost part with the tips of your fingers. How many fingers are on top of the part? Multiply that by two. That's how many rollers you're going to use.
Example: 3 fingers on top x 2 = 6 skinny rollers
As you might've guessed, this formula is dependent on hair thickness, so it varies from person to person. It's calculated so you don't roll more hair than your front part can cover. If you do this correctly, the front part should be enough when you're done, but we're going to take an extra precaution.
Divide your middle part evenly by the number of skinny rollers you used. Pull the mini part forward and keep it forward as you roll it. I know when you sleep in rollers, you pull them back to prevent breakage from moving around, but this is a day technique. You don't sleep in it. You're going to want the rollers to be pointed forward. Think of a conch shell, with the middlemost part of your hair acting as the body and the back of your head taking the place of the exit hole. Fat vs. slim.
Carefully lay the ends of a part again the roller, evenly spreading it so none of the roller shows. Every time you make a turn with a roller, smooth the hair across it with your thumb. Do this until your rolled hair is nestled against your scalp. If the roller doesn't have a snap clasp, use a pin, but that's not why I told you to buy them. The pins are to hold the roller in place, not your hair. You're going to want your rolled hair to be rooted to where they are on your scalp. I recommend four pins minimum to a roller, one for every corner. But you shouldn't stop pinning until you can jump up and down without the rollers moving around at all.
When you're done rolling the middlemost part of your hair, you're going to release the rest of your awesome locks from their bands. Carefully smooth the front most part of your hair backwards over the part you just rolled. Pull the hair at the sides to cover up the sides of the rollers. If it's long enough, take the hair at the nape of your neck and tuck it up into or above the cluster of rollers.
The little bump made by the rollers, when carefully concealed, makes it look like you have a fuller head of hair. I mentioned the pompadour, a hairstyle with a big bump at the front, earlier. It basically has the same hair methodology behind it, where you purposefully make a bump in the hair to make it look fuller. Unlike the pompadour though, keeping our rollers in is a bit more discreet.