Afros , braids , locs , twists, cornrows : the versatility of Black hair is undeniable. You can wear curls one day and show up the next with a pin-straight 'do just because you wanted to channel a different energy. That said, we may have a favorite in sew-in hairstyles.

Let us explain. Sew-ins hairstyles have come a long way from being the bulky, unblended styles we used to wear in the early aughts. In fact, the protective style can allow you to achieve almost every single look we mentioned above, all without the damage that comes from using heat and physical manipulation to style your hair.

Still, if you're not familiar with the process, the popular technique may still be shrouded in mystery. That's where we come in. Whether you're ready for your sew-in era or you just want to have a few more styling options to keep in your back pocket, we asked a hairstylist to explain everything you should know about sew-in weave hairstyles — from the different types you can get to how to keep your hair healthy underneath an install.

Martika Cogdell is a Brooklyn-based hairstylist. What Are Sew-Ins? While often referred to as a style, a sew-in is actually a technique used to install hair extensions where you "sew in" hair to your braids. "They are an extension service that normally consists of a cornrow braided base that hair wefts can be sewn on top of using a needle and thread," hairstylist Martika Cogdell tells PS.

The act of sewing hair or hairpieces onto the head has been around for.