Cosmetic Shelf Life Guide
All cosmetics have a limited shelf life after opening, indicated by the PAO (Period After Opening) symbol - a small jar icon with a number like "6M" or "12M". Eye products like mascara expire fastest (3-6 months) due to bacteria risk. Powder products last longest (up to 24 months). Store products in cool, dry places away from sunlight. Signs of expiration include changes in smell, color, texture, or separation. Using expired products can cause breakouts, infections, and skin irritation.