Locs, also known as dreadlocks, are a hairstyle that consists of hair strands that have been coiled, braided, twisted, or palm-rolled to create a rope-like appearance. The term "locs" is preferred over "dreadlocks" due to the negative connotation of the word "dread," which is believed to be associated with the slave trade. The hairstyle has been around for centuries, with some of the earliest known depictions of dreadlocks dating back to ancient Greece. Locs are easier to create on Nubian or African hair than on straight Caucasian hair, and they prevent the strands from losing moisture and can last for a very long time.

There are several types of locs, each with a unique look, characteristics, and maintenance routine. Traditional locs are the most widely recognized type of locs, with a medium to large diameter of 5-14 mm and medium to large groups of hairs used to create locs. Semi-freeform locs are another type that starts from traditional locs with medium to large groups of hairs to create locs, but over time, the loc wearer opts to retwist less often, allowing the hair to grow out and potentially become thicker. Other types of locs include sisterlocks, microlocs, interlocs, and instant locs.

Maintaining locs involves regular washing, conditioning, and moisturizing to keep the hair healthy and prevent breakage. Locs can also be styled in various ways, such as updos, braids, and twists. Overall, locs are a unique and versatile hairstyle with a rich history and cultural significance.