The World Health Organization has Five Moments for washing hands: 1  before patient care. 2  after environmental contact. 3  after exposure to blood/body fluids. 4  before an aseptic task, and. 5  after patient care.
This means that you can use leftover sunscreen from one year to the next. Some sunscreens include an expiration date â a date indicating when they're no longer effective. Discard sunscreen that is past its expiration date. If you buy sunscreen that doesn't have an expiration date, write the date of purchase on the bottle and be sure to throw it out within three years. Also, discard sunscreen that has any obvious changes in color or consistency.
USCIS has discussed implementing a rule requiring permanent residents to replace green cards that lack expiration dates, but no such rule has been implemented to date. While more recent versions of the green card expire every ten years, valid green cards issued in the 1970âs and 1980âs may not have an expiration date. Older green cards with no expiration dates can create other problems for travelers.