Out of all the things you could treat your hair to during your life, a keratin treatment is high up on the list. The process of a keratin treatment may be lengthy, but the way it makes your hair sleek, shiny, smooth, and basically void of any frizz is a feeling no girl can deny feels amazing.

Whether you’re new to keratin treatments or you’ve had one before and you need to brush up on how to protect and maintain your new look, one of the most important things to know about getting a keratin treatment is how you’ll have to sleep after one. It’s not like you can just jump into bed, sleep on the same old sheets, and proceed with your normal routine the first night.

After a hair treatment, your hair still needs time to set. To make sure you wake up with hair that is still smooth and sleek, here’s how you should sleep after a keratin treatment:

How to Sleep After Keratin Treatment

Tip 1: Sleep on a Silk Pillowcase

If nothing else, sleeping on a silk pillowcase will be the best way to make sure your keratin treatment doesn’t unfold and frizz out right away. A silk pillowcase is better than a cotton or polyester pillowcase because it doesn’t create as much friction as cotton does. Friction is particularly bad for keratin-treated hair because it literally strips off the keratin.

Silk also doesn’t absorb moisture like cotton and polyester. After a keratin treatment, it’s important to do everything possible to make sure the moisture stays in the hair.

Additionally, instead of the hair’s strands rubbing up against themselves and the pillowcase, your hair will just slide across it, leading to less knots and tangles. Silk pillowcases also have been proven to reduce split ends and there’s no bad in that!

The other benefit of sleeping on a silk pillowcase is that silk doesn’t warm up like cotton and polyester. And we all know that when you warm up, you sweat, leading to frizzy hair. Your new keratin-treated straight hair will be happiest with no friction, frizz, or knots.