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.
As for a red face, this can have a wide variety of causes including rosacea (a skin condition that may also cause swelling and sores), allergies, inflammatory conditions, fever, and sunburn. Medications (including some used to lower blood pressure) can also cause a red face as a side effect. However, one thing that's very unlikely to be behind your red face is high blood pressure. So that's one less thing to get hot and bothered about.