Have you ever heard about laser? Laser is a particular kind of light having only one wavelength. Since ordinary light contain different colours but laser is a monochromatic since these lights are not found in nature and are artificially prepared. These lights have high penetrating properties, so are widely used for cutting or drilling.
Straight hair is very one needs the want straight long shine hair which looks so beautiful and for that they spend a lot money on that but the hair become rough and damage due to chemical and the heating aliments use for hair straighter can reduce the natural shine of over hair and make hair