blue bubbles clean cleanliness colors colours hand-wash hands health hygiene hygienic red sign soap suds washing washing hands white cleaning detergent hand housechores sponge window 3-D appearance color coloration colored colour coloured communicating communication expressing expression eye-catching hand-washing indication information informative informing notification notifying plastic raised semi-transparent signs surface surfaces surfacing symbols texture textured textures thick thin washing-hands words bar basin bathroom cleanse dirty disinfect faucet germ infection Lather prevent prevention rinse sanitize scrub sink soak soaking soapy spot sterile tap wash water wet woman