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Definition of optical brightener in English: optical brightenernoun A fluorescent substance added to detergents in order to produce a whitening effect on laundry. Example sentencesExamples - As a result, the materials that contain optical brighteners appear to reflect more light than is incident upon them and the blue-violet emission tends to offset yellowish reflected light making the material appear whiter.
- Softeners, optical brighteners, and antistatic agents also may be used on some fabrics.
- I have read that long wash times can leach out optical brighteners, but I've never been able to tell the difference between 2 and 6 hours in a cold wash.
- Arches Bright White is created without optical brighteners or bleaches with only the purest well water and cotton fibers, company officials said.
Definition of optical brightener in US English: optical brightenernounˈäptəkəl ˈbrītnər A fluorescent substance added to detergents in order to produce a whitening effect on laundry. Example sentencesExamples - I have read that long wash times can leach out optical brighteners, but I've never been able to tell the difference between 2 and 6 hours in a cold wash.
- Softeners, optical brighteners, and antistatic agents also may be used on some fabrics.
- Arches Bright White is created without optical brighteners or bleaches with only the purest well water and cotton fibers, company officials said.
- As a result, the materials that contain optical brighteners appear to reflect more light than is incident upon them and the blue-violet emission tends to offset yellowish reflected light making the material appear whiter.
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