1. For better grip, flip the bobby pin over so that the wavy side is against your head.
If you have a hard time keeping your bobby pins in place, try flipping the pin over. The straight side is slicker and won't grip as well as the wavy, more textured side.
2. Spray dry shampoo or texture spray on the bobby pin before insertion to prevent slippage.
Spritz a spray like Oribe Dry Texture Spray on the inside of the bobby pin to give it a little more grip. For the above look (tutorial here), tease the ends of the hair with a rattail comb before slipping the pins in for added hold.
3. Use the "locking" technique to ensure that your pin stays in place ALL DAY.
Using a larger bobby pin or hairpin like Nishida Hair Pins, aim the open end of the pin against the direction that your hair is pulled. Next, rotate the pin so the open end is now facing the same direction as the hair, and push the pin in toward your head to secure it. If inserted correctly, the pins will pull your hair tighter and be unnoticeable. Repeat these steps until your style is completely secure.
4. Keep your hair from falling in your face with hidden bobby pins.
For a sexy, blown-back look like Chrissy Teigen's, you'll want to discreetly pull your hair back with pins. "For the Academy Awards, I put a bobby pin on both sides of Chrissy's head right behind her ears so no one could see them," stylist Pucciarello told Cosmopolitan.com. "That way, she wouldn't have to keep running her hands through her hair and it wouldn't fall forward or off to the sides."
5. Cover the elastic of your ponytail with a section of hair pinned around the base.
After you've tied off your ponytail, grab a small section (about the width of your pinky) from the tail and wrap it around the base. Tuck in any loose ends and secure it by inserting a bobby pin into the base.
6. Pin your bangs back with a cool ombré chevron bobby pin design.
Start by pinning your bangs with one bobby pin with the open end toward the ceiling. Complete the "V" shape by sliding one leg of another bobby pin at a downward angle inside the looped end of the first pin. Repeat as many times as you'd like to get the look you want.
7. Fix any wispy pieces or bumps with cute bobby pins instead of redoing your entire updo.
If your hair has a lot of shorter layers that stick out of your braid, tuck them in with pretty pins.
8. Insert bobby pins into your ponytail holder vertically to prop up your ponytail.
Once you've put your hair in a ponytail, insert two or three bobby pins halfway inside the elastic and facing downward toward the crown of your head. Then, fluff your ponytail and flip it over for a fuller look that won't sag or droop.
9. Make your curls last longer by pinning the sections after curling them until they've cooled.
After you've released a section of hair from your curling iron, immediately roll the strand back up and pin it against your head. Once you've pinned all the sections up, wait for them to cool to room temperature and then take out the pins. This technique will help your curls from falling flat right after you've curled them.
10. Give your side pony more volume by teasing and pinning the hair at your crown first.
To make your side ponytail look more voluminous, backcomb small sections of hair at the crown of your head and then smooth them over and pin them back. Gather all of your hair into a ponytail for the finished look.