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.
Saturation, chroma and chromacity are used to describe color intensity in art. While the precise meaning of each word may be interpreted differently, they are often used interchangeably when describing color intensity. For example, chroma is considered to refer to the brightness of a color when it is compared to the brightness of another color that appears white.