African American women are the most likely to wear sisterlocks in order to better manage their natural hair. The hair is braided into several little braids. The braids are so tiny that they may give ladies the impression of straight hair while being effortlessly handled without the need of any product. Sisterlocks can be done at home with simple tools like bobby pins and curling irons. Professional stylists often use more advanced techniques to create beautiful locks that last long. They may use a hand-held electric device called a roti, which strips away the outer layer of hair to reveal the softer inner layer. This treatment is called "roto-rolling" or "sisterlocking." Black women have been wearing their hair in styles similar to today's sisterlocks for many years now. They were originally inspired by white women, but as they became popular among blacks themselves, other races began copying them too. There are two schools of thought on how black women's hair got so nice after slavery: some say it was due to the lack of work opportunity, so they had time to take care of themselves; others believe it was because most masters didn't want to damage the hair by using chemicals. In the early 20th century, black women started wearing their hair in these styles because they wanted to look like whites. They would copy what white people did with their hair.