Vidal Sassoon, a British hairstylist, is widely regarded as one of the most influential figures in the history of hairstyling. Born in 1928, Sassoon began his career in the 1940s and quickly gained recognition for his innovative and geometric cutting techniques. Over the years, he developed a unique approach to hair cutting, which emphasized the importance of understanding the shape and structure of the hair, as well as the individual's face shape, skin tone, and personal style.