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Wella AG is a German company specializing in hair care, styling, colorants, and other beauty products, and was founded in 1880 in Germany by Franz Ströher. Its headquartered in Darmstadt, Germany . The company was controlled by Procter & Gamble from 2003 until it was sold to Coty in 2015 along with some 40 other P&G brands. [ 1 ]
Clairol logo. Clairol is the American personal care-product division of company Wella, specializing in hair coloring and hair care.Clairol was founded in 1931 by Americans Joan Gelb and her husband Lawrence M. Gelb, with business partner and lifelong friend James Romeo, after discovering hair-coloring preparations while traveling in France. [1]
It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]
This is an accepted version of this page This is the latest accepted revision, reviewed on 14 December 2024. For other color lists, see Lists of colors. This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "List of colors" alphabetical ...
Color targets such as the ColorChecker can be captured by cameras and other color input devices, and the resulting images’ output can be compared to the original chart, or to reference measurements, to test the degree to which image acquisition reproduction systems and processes approximate the human visual systems.
For each unique palette, an image color test chart and sample image (truecolor original follows) rendered with that palette (without dithering) are given. The test chart shows the full 256 levels of the red, green, and blue (RGB) primary colors and cyan, magenta, and yellow complementary colors, along with a full 256-level grayscale.