system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does water "reset" bed hair?
gpt
Barber here. Your hair has certain a bonds that give it the shape that it holds, there are strong bonds that give it it's curly or straight nature. Water and heat will break down the weaker bonds that will reform when cooled/dried. Stronger bonds are broken and reformed chemically with permanent waving (perms) or chemical straightner. So warm water is the best way to fix bed head.