Hand washing. Hand washing, also spelled handwashing and known as hand hygiene, is the act of cleaning one's hands for the purpose of removing soil, dirt, and microorganisms. This may be done with or without the use of water, other liquids, or soap.
Sunscreen does expire. The molecules in suntan lotion (such as homosalate and octyl salicylate) block the penetration of UV radiation by acting as filters and absorbing and reflecting high energy UV. Over time these molecules break down and lose effectiveness, kind of like expired cold medicine or vitamins.
The WebSphere Application Server LTPA token expires based on the lifetime of the login session, not based upon inactivity. Thus, the WebSphere Application Server login session will not expire if the user performs no action for some period of time. However, the HTTPSession does expire based upon inactivity.