INTRODUCTION. Gastroesophageal reflux, also called acid reflux, occurs when the stomach contents back up (reflux) into the esophagus or mouth. Acid reflux is a normal process that occurs in healthy infants, children, and adults. Most episodes are brief and do not cause bothersome symptoms or problems.
How often to replace: 1  Mascara: every 3-6 months (which means youâll have to throw it away before itâs used upâ¦ the same goes for a lot of these products, probably) 2  Eye shadow: every 6 months. 3  Eyeliner (liquid): every 3-4 months. 4  Eyeliner (pencil): every 6-12 months.
Here are my general guidelines for the average shelf life of most cosmetics: 1  Powder based products (e.g. mineral foundation, eye shadows, blushes): 2-3 years. 2  Liquid foundation: up to 1 year. 3  Lipstick/gloss/liner: 2 years max for lipstick.  Mascara/liquid eyeliner: 2-3 1  months. Pencil eye liner: 2-3 years.