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.
Facial swelling can be caused by both minor and major medical conditions. Many causes are easily treatable. However, some are severe and require immediate medical attention. Common causes of facial swelling include: 1  allergic reaction. 2  eye infection (such as conjunctivitis). 3  surgery. 4  side effect of medication. 5  cellulitis (bacterial infection of the skin of face). 6  sinusitis. 7  hormonal disturbance (such as thyroid diseases). 8  sty. 9  abscess.