People from different cultures have invented various ways to arrange, or "style" their hair trends.Typically, humans have the longest hair on the top of the head, with shorter hair on the eyelids and eyebrows. For humans, hair cut trends , hairstyle or hairdo normally describes cutting or styling head hair, rather than other body hair such as facial, underarm hair, or pubic. Unlike other animals, human beings of many cultures cut their hair, rather than letting it grow naturally. Hair styles and hair colour trends are often used to signal cultural, social, and ethnic identity. Hair styles in both men and women also vary with current fashion trends, and are often used to determine social status. In modern Western societies it is considered masculine hair trend for men to maintain the naturally thicker hair on their faces, arms, chests, backs, buttocks and legs, but the hair growing from the top of the head is generally kept relatively short. By contrast, it is considered feminine, for women to have little or no hair on their bodies, including pubic hair, but to let it grow long on the tops of their heads, having corresponding hair cut trends. Before World War I men generally had longer hair and beards. The trench warfare between 1914 and 1918 exposed men to lice and flea infestations, which caused the order for hair to be cut short, establishing a norm that has persisted. Hair care for humans, hair colour trends inclusive, is a major world industry with specialized tools, chemicals and techniques. In most societies, people style or adorn their hair trends for aesthetic reasons and often practice hair cut trends by having it removed, or by shaving or other means. In some, women usually shave their legs, armpits and the entirety or just parts of the pubic area, and shape their eyebrows. Also, we see that artificially bare (shaved, etc.) legs, arms, etc. on women are seen as "sexy" even today, while body shaving is not nearly as common for men. If hair trends you in form of pulled back in a French Twist or ponytail, give your hair a break once in awhile by letting it hang freely. Those styles put a lot of pressure on the hair, especially at the front hairline. Also, hair cut trends of your's should not include any uncoated elastic bands in your hair! Elastic grabs at the shaft and will break it. Hair trends enable the fashion enthusiasts to alter their image in strict accordance with the mood of the time. Assuming this, hair trends give the people a chance not only to change the way they look, but also justify the changes in their behavior. There so many hair schools and hair trends, meaning hair colour trends and hair cut trends. New hair colour trends and new hair cut trends designers try to catch the mood of the time and satisfy the desire of the population for the corresponding changes in their image. In this respect, one can tell, that the spread of civilization should bring about unprecedented urban style hair cuts trends and introduce absolutely unnatural hair colour trends.