How do you make textured hair?

I'm curious, can you elaborate on the process of creating textured hair? What techniques or products do stylists typically use to achieve this look? Is it a natural process or does it involve the use of chemicals or heat? I'm also interested in knowing if there are any tips or best practices for maintaining textured hair and keeping it healthy over time. Can you provide some insight into the dos and don'ts when it comes to caring for textured hair?