Sideburns are patches of facial hair that grow along the sides of the face, typically extending from the hairline down to the jawline. They can vary in length and thickness, and are often styled in various ways. The term "sideburns" is believed to have originated from the name of Ambrose Burnside, a 19th-century American general known for his distinctive facial hair. Sideburns can be worn alone or in combination with other facial hair styles, such as mustaches or beards. They have been popular in different cultures and eras, often reflecting personal style or social trends. Today, many people choose to maintain sideburns as part of their grooming routine.