Hair is a protein filament that grows from follicles found in the dermis, or skin. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Trichology is the scientific study of the hair, it's deseases. Hair consists mainly of keratin, which is also responsible for the elasticity of fingernails.A single hair has a thickness of 0.02 – 0.04mm, so that 20 – 50 hair strands next to each other make one millimeter.Hair is as strong as iron. It rips after applying a force equivalent to 60kg, only after it stretched itself for about 70%.The average scalp has 100,000 strands, or just fewer than 1000 per square inch. Hormone imbalances and crash dieting can trigger temporary hair loss.Principle of Hair Design: A good designer always envisions the end result before beginning. Inspiration can come from almost anywhere, at any time.Movies, TV, magazines, videos, a person on the street anything, anywhere can spark the creative process.
Line: Line defines form and space.Lines create the shape, design and movement of a hairstyle. The eye follows the lines in a design. They can be straight or curved. There are four basic types of lines:
Horizontal linescreate width in hair design.They extend in the same direction and maintain a constant distance apart from the floor or horizon. Vertical lines create length and height in hair design.
Form:Form is the mass or general outline of a hairstyle.It is three-dimensional and has length, width and depth. Form or mass may also be called volume. The silhouette is usually the part of the overall design that a client will respond to first.The hair form should be in proportion to the shape of the head and face, the length and width of the neck, and the shoulder line.
Space:Space is the area surrounding the form or the area the hairstyle occupies.In hair design, with every movement the relationship of the form and space change. The space may contain curls, curves, waves, straight hair or any combination.