A wide-tooth comb is a grooming tool designed with widely spaced teeth, making it ideal for detangling hair without causing breakage. It is particularly useful for curly hair or thick hair, as it allows for gentle separation of strands while minimizing damage. These combs are often made from materials like plastic, wood, or metal, and can be used on both wet and dry hair. Regular use of a wide-tooth comb can help maintain healthy hair by reducing knots and preventing split ends, making it a popular choice among hairstylists and individuals alike.