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2. Optical brightener - Wikipedia

   en.wikipedia.org/wiki/Optical_brightener

   Paper brightness is typically measured at 457 nm, well within the fluorescent activity range of brighteners. [5] Paper used for banknotes does not contain optical brighteners, so a common method for detecting counterfeit notes is to check for fluorescence. Optical brighteners have also found use in cosmetics. One application is to formulas for ...

3. Paper chemicals - Wikipedia

   en.wikipedia.org/wiki/Paper_chemicals

   Optical brightener is used to make paper appear whiter. Optical-brightening agents use fluorescence to absorb invisible radiation from the ultraviolet part of the light spectrum and re-emit the radiation as light in the visible blue range. The optical-brightening agent thus generates blue light that is added to the reflected light.

4. Whitening - Wikipedia

   en.wikipedia.org/wiki/Whitening

   Corrective fluid, a white fluid applied to paper to mask errors in text; Non-dairy creamer, commonly called tea whitener or coffee whitener; Optical brightener, an additive used to enhance the appearance of colour of fabric and paper; Stress-whitening, where a white line appears when a material is stressed by bending or punching

5. Fluorescence - Wikipedia

   en.wikipedia.org/wiki/Fluorescence

   The blue light emitted by the brightener compensates for the diminishing blue of the treated material and changes the hue away from yellow or brown and toward white. Optical brighteners are used in laundry detergents, high brightness paper, cosmetics, high-visibility clothing and more.

6. Our beauty expert picked her favorite products on sale for ...

   www.aol.com/lifestyle/our-beauty-expert-picked...

   Tatcha The Serum Eye Brightener Stick . $39 $49 Save $10. ... and this pack of 10 is a solid entry point into the famous K-beauty line — and you can't beat the price. $15 at Amazon.

7. 4,4′-Diamino-2,2′-stilbenedisulfonic acid - Wikipedia

   en.wikipedia.org/wiki/4,4′-Diamino-2,2...

   4,4′-Diamino-2,2′-stilbenedisulfonic acid is the organic compound with the formula (H 2 NC 6 H 3 SO 3 H) 2 C 2 H 2.It is a white, water-soluble solid. Structurally, it is a derivative of trans-stilbene, containing amino and sulfonic acid functional groups on each of the two phenyl rings.

8. All of these Black Friday deals would make very good gifts - AOL

   www.aol.com/lifestyle/all-of-these-black-friday...

   Broida dubbed this iPad the best overall tablet of 2024, so if you're looking for the cream of the crop, grab it now while it's at its best price ever. It comes with a one-year warranty, boasts up ...

9. This Under-Eye Brightener Seriously Looks Like an Instagram ...

   www.aol.com/entertainment/under-eye-brightener...

   This brightener is currently available in three shades but may cover a variety of skin tones. It’s paraben-free, sulfate-free, phthalate-free and cruelty-free, and it’s made in the USA!