While permanent color is just that â permanent â it does tend to eventually fade with time. Hello, oxymoron. However, it's the only type product that can actually lift pre-existing color out of the hair, since it relies on hydrogen peroxide and ammonia to get the job done. It's also the only type of hair color that can cover gray completely, and it also has the ability to change the hair up to four levels â sometimes even five. After combining the tint of choice with a developer, the permanent hair dye is applied, and the ammonia immediately begins opening up the cuticle. Then, the peroxide moves in, breaking up the melanin in your hair shaft, replacing what's left with the pigment of your choice (hopefully).
tropical zone. n the part of the Earth's surface between the Tropic of Cancer and the Tropic of Capricorn; characterized by a hot climate. any of the geographical zones loosely divided according to prevailing climate and latitude.
The neritc ocean zone is primarily in warm Tropical waters. This zone is the shallow region right before the continental shelf, since shallow allowing the sun to penetrate the water, causing the warmth. Since the climate is warm, many coral reefs exist on the shallow floor. The neritic zone is so sunny that another name for it is the Sunlit zone. 4) Soils and Geologic Characteristics The soil of the neritic zone is very rich, which causes for all the species to be able to live there. The richness of the soil depends on runoffs, waves, and currents to bring in the nutrients. The main geologic characteristic of the neritic zone is that it is low sea level which allows productivity to be high.