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.
All Disneyâs PhotoPass photos, dining photos and attraction photos in MyDisneyPhotoPass.com accounts will now expire 45 days from the date the photos were taken. This means that the expiration date of all of your photos may vary, depending on the date each photo was taken.