Quick Answer. When an electron absorbs energy, it will move up from a lower energy level to a higher energy level, called the excited state of the negatively-charged subatomic particle. However, the absorbed energy is released within a small interval of time and the electron moves down to its ground state.. Continue Reading.
1 Post-inflammatory hyperpigmentation (PIH) . 2  These are dark spots that occur as a result of trauma to the skin, which can be caused by psoriasis, burns, acne, and certain skin care treatments that are hard on the skin. Don't go out in the sun with citrus juice on your face, as this can cause it to burn. 2  Always follow package directions when using home treatments for dark spot removal. 3  Make sure to use plenty of sunscreen when using any type of skin lightening product.
How to Get Rid of Dark Spots on Your Face. The chemical that gives human skin its color is called melanin, and the production of too much in one area leads to freckles, liver spots, and other patches of darker skin. These dark spots on your face, which are also called hyper-pigmentation. These can be caused by sun exposure, hormonal fluctuations, or as a side effect of certain drugs. It's not a serious medical condition, but if you have dark spots you're probably ready for brighter, clearer skin.