Meaning ofbrightenerin English

Noun

1. a chemical that absorbs and re-emits light
   The laundry detergent contained a brightener to make clothes whiter.
2. something that makes things brighter; improves appearance
   The new brightener in the beauty product helped to even out skin tone.
3. a substance for smoother electroplated finishes
   The manufacturer added a brightener to the electroplating solution to improve the finish.