18in hair length refers to the measurement of hair that falls approximately 18 inches from the scalp. This length is considered to be a medium to long length, and it is a popular choice for those who want versatile hair that can be styled in a variety of ways.
18in hair length is long enough to be worn in a ponytail, braid, or bun, but it is also short enough to be manageable and easy to care for. It is also a good length for those who want to add extensions or other hairpieces.