Asian J Beauty Cosmetol. 2010; 8: 0.
Study of the Damage rate change in Alkaline Chemical treatment according to Hair
ABSTRACT
To study of the rate of damage and morphological change when apply perm and dye according to kinds of hair, measured the thickness of hair and divided the samples into groups. Permed and dyed different ways to the sample which divided into groups and measured the chromaticity and thickness according to kinds of hair and alkaline chemical with Spectrum colormeter and Micrometer. Measured the tensile strength of hair photographs of the surface with the electron microscope. The thickness of hair became a little thin after chemical treatment and perm had the biggest rate of becoming thin followed by dye, dye after permed according to kinds of treatment. According to kinds of hair, vellus hair had the biggest value followed by straight hair, terminal hair. Thin hair had the biggest decrease of tensile strength after chemical treatment followed by vellus hair, straight hair, terminal hair. Chromaticity according to kinds of hair increased by order of vellus hair, straight hair and terminal hair. According to chemical treatment, dye after permed has bigger value than dye. The distance between cuticle were cracked, scales were fallen in surface of cuticle which spread chemical treatment.
Keywords :
Straight hair, Vellus hair, Terminal hair, Alkaline chemical, Damage
