When to Replace Makeup (Mascara, Foundation, Lipstick)

Why Makeup (Mascara, Foundation, Lipstick) Expire

Cosmetics are a mixture of pigments, oils, waxes, preservatives, and water. The preservative system (parabens, phenoxyethanol, or natural preservatives) has a finite capacity to control microbial growth. Once the preservatives are depleted, bacteria and fungi colonize the product.

Mascara has the shortest safe life because the brush enters the eye area, collects bacteria, and reintroduces them into the tube with every use. The dark, moist interior of a mascara tube is an ideal bacterial incubation chamber. Eye infections from contaminated mascara, including conjunctivitis and styes, are well-documented.

Liquid and cream products (foundation, concealer, cream blush) contain water, which supports microbial growth. Powder products are inhospitable to bacteria because they lack moisture, giving them the longest shelf life. However, brushes and applicators used with powder products can introduce moisture and bacteria, especially if used on damp skin.

Warning Signs It's Time to Replace

• The product smells different than when it was new (rancid, sour, or chemical odor)
• The texture has changed (clumpy mascara, separated foundation, dried-out lipstick)
• The color has shifted or faded
• You have had an eye infection, cold sore, or skin infection since opening the product
• The product causes irritation, redness, or breakouts that it did not cause when new
• You cannot remember when you opened it

How to Check the Age of Your Makeup (Mascara, Foundation, Lipstick)

Look for the Period After Opening (PAO) symbol on the packaging: a small jar icon with a number and "M" (e.g., "6M" means 6 months after opening). Write the opening date on the product with a marker. If no PAO is listed, follow general guidelines: mascara 3 months, liquid/cream products 6 to 12 months, powder products up to 2 years.

Replacement Recommendations

Never share eye makeup. Do not add water to dried-out products to extend their life (this dilutes preservatives and introduces bacteria). Clean brushes and applicators regularly (weekly for brushes used with liquid products, monthly for powder brushes). Store cosmetics in a cool, dry place away from direct sunlight. If you have an eye infection, discard all eye makeup currently in use and replace it after the infection clears.