1. This Symbol On Cosmetics Bottleshttps://commons.wikimedia.org/wiki/File:5_PAO_12M_2007-07-12.jpg
According to Wikipedia, the sign with the number stands for the amount of time that the material will be at its complete potential before going stale. It coincides as an expiration day on a carton of milk. M means months, as well as W stands for weeks.
2. Toothpaste with different colorshttps://www.flickr.com/photos/bradleypjohnson/224213837/
According to Wikipedia, the factor for this is easy: each colour has its own unique homes. White has fluoride for whiter teeth, red maintains your gums tidy, and blue/green maintains your breath fresh throughout the day.