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.
How long are my Ultamate points valid? Published 10/17/2012 05:36 PM | Updated 08/13/2015 01:04 PM. Points will expire at the end of the quarter one year after the date they were earned. Check your receipt, ULTAulta.com/rewards, or your monthly email statement for the next expiration date.