Fluxuations in the power. Or someone turning a large appliance on that draws current. Ie a refrigerator
There are products in drug stores that will do this. Look in the shampoo and color isles.
You can brighten up dull bath taps by using a mixture of baking soda and vinegar to scrub away any mineral deposits or tarnish. For a natural shine, polish the taps with a cloth and a small amount of olive oil. Alternatively, consider using a store-bought metal polish specifically designed for taps to restore their shine.
Sex
Halogen light glows and LED is dull.
A dull knife rips the skin, while a sharp knife (think scalpel) slices smoothly. A dull knife would be by far more painful.
Left leg use.... I think.
Go see a doctor ASAP.
because some people like dull lighting like at night
The radial muscles in the iris contract making the pupil larger letting in more light.
Either your charging system is not working, or the lens is clouded, scratched, or discolored from the sun.
It could be a heart attack.
The component of the atmosphere that causes iron to rust and paint to dull is oxygen. When iron is exposed to oxygen and moisture, a chemical reaction called oxidation occurs, leading to the formation of iron oxide, or rust. In the case of paint, oxygen can react with components of the paint, causing it to lose its shine and appear dull over time.