Ultherapy is the only FDA-approved non-invasive device that uses micro-focused ultrasound to lift skin on the face and neck. It uses ultrasound energy to lift, tone, and tighten loose skin on the brow, face, neck, and under the chin.
Color words in a language can also be divided into abstract color words and descriptive color words, though the distinction is blurry in many cases. Abstract color words are words that only refer to a color. In English white, black, red, yellow, green, blue, brown, and gray are abstract color words.
Color - Additional terms. 1  Color wheel: an illustrative organization of color hues in a circle that shows relationships. 2  Colorfulness, chroma, purity, or saturation: how intense or concentrated a color is. 3  Dichromatism: a phenomenon where the hue is dependent on concentration and thickness of the absorbing substance.