Comb

A comb is a toothed device used for styling, cleaning and managing hair and scalp. Combs are among the oldest tools found by archaeologists, having been discovered in very refined forms from settlements dating back to 5,000 years ago in Persia.

Combs consist of a shaft and teeth that are placed at a perpendicular angle to the shaft. Combs can be made out of a number of materials, most commonly plastic, metal or wood. Combs made from ivory and tortoiseshell were once common but concerns for the animals that produce them have reduced their usage. When made from wood, combs are largely made of boxwood, cherry wood or other fine-grained wood. Good quality wooden combs are usually handmade and polished.

Combs can vary in shape according to function. A hairdressing comb may have a thin, tapered handle for parting hair and close teeth. Common hair combs usually have wider teeth halfway and finer teeth for the rest of the comb. Hot combs were used solely for straightening hair during the colonial era in North America.

A hairbrush comes in both manual and electric models. It is larger than a comb, and is also commonly used for shaping, styling and cleaning hair. A combination comb and hairbrush was patented in the 19th century.

Combs can be used for many purposes. Historically, their main purpose was securing long hair in place, decorating the hair, matting sections of hair for dreadlocks, or keeping a kippah or skullcap in place. In Spain, a peineta is a large decorative comb used to keep a mantilla in place.

In industry and craft, combs are used in separating cotton fibres from seeds and other debris (the cotton gin, a mechanized version of the comb, is one of the machines that ushered in the Industrial Revolution). A comb is used to distribute colours in paper marbling to make the swirling colour patterns in comb-marbled paper.

Combs are also a favorite tool for police investigators to collect hair and dandruff samples that can be used in ascertaining dead or living persons' identities, as well as their state of health, toxicological profiles, and so forth.

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Wikipedia