Cosmetics, including eyeshadow, offer a way to express creativity and enhance features. Like all cosmetics, eyeshadows possess a finite lifespan during which they remain safe and effective for use. Understanding this duration helps ensure both product performance and user well-being. This guide explores the typical longevity of eyeshadows and the factors influencing their expiration.
Understanding Eyeshadow Shelf Life
The lifespan of an eyeshadow varies depending on whether it has been opened and its formulation. Unopened eyeshadows, when stored correctly, can remain stable for two to three years, due to their sealed packaging preventing exposure to air and microorganisms. Once the seal is broken, however, the clock begins on its “Period After Opening” (PAO).
The PAO is often indicated by a small open jar symbol on the packaging, containing a number followed by the letter ‘M’, such as ‘6M’, ’12M’, or ’24M’. This symbol signifies the number of months the product is recommended for use after opening (e.g., ’12M’ means discard after 12 months). Powder eyeshadows generally have a longer PAO, often 24 months, because their low water content makes them less hospitable for bacterial growth. In contrast, cream or liquid eyeshadows, which contain more water, are more prone to microbial contamination and typically have a shorter PAO, often ranging from 6 to 12 months.
Recognizing Expired Eyeshadow
Even within its PAO, certain changes can indicate it has degraded and warrant discarding. One noticeable sign is a change in the product’s texture. Powder eyeshadows might become unusually hard, developing a crust, or conversely, become excessively crumbly and difficult to pick up with a brush. Cream or liquid formulations may separate, become greasy, or dry out completely, losing their smooth consistency.
Appearance or scent changes are also indicators. Color might appear dull, develop dark spots, or show uneven pigment. Additionally, a rancid, chemical, or otherwise unpleasant odor emanating from the product is a clear sign of spoilage, often due to the breakdown of ingredients or microbial growth. Furthermore, if the eyeshadow no longer blends smoothly, applies patchily, or provides significantly reduced color payoff, its performance has likely deteriorated, suggesting it is past its prime.
Extending Eyeshadow Longevity
Proper care and storage extend eyeshadow usability. Storing eyeshadows in a cool, dry environment away from direct sunlight helps prevent the degradation of ingredients caused by heat and light exposure. High humidity, such as that found in bathrooms, can also promote microbial growth, so a dresser drawer or a dedicated makeup organizer in a bedroom is often a better choice. Keeping product lids tightly closed after each use is also important, as this minimizes exposure to air, which can dry out formulations and introduce contaminants.
Strict hygiene during application also extends eyeshadow life. Always apply eyeshadow with clean brushes or applicators, as dirty tools can transfer bacteria and oils from the skin back into the product. Regularly washing makeup brushes with a gentle cleanser helps prevent this transfer and keeps the product cleaner. Sharing eyeshadows with others can also introduce diverse microbial flora into the product, potentially accelerating contamination, so it is generally advisable to use personal makeup products.
Why Discard Expired Eyeshadow
Using expired or spoiled eyeshadow carries health risks, especially near the sensitive eye area. Over time, all cosmetic products, including eyeshadows, can accumulate bacteria, fungi, and other microorganisms, even if these contaminants are not visibly apparent. The preservatives in the product degrade over time, reducing their ability to inhibit microbial growth.
Contaminated eyeshadow can cause mild irritation like redness, itching, or swelling, or more severe reactions. Bacterial or fungal infections like conjunctivitis (pink eye) or styes can occur when microorganisms from the product enter the eye. These infections can be painful and may require medical treatment. Discarding expired or compromised eyeshadows helps prevent these potential risks, safeguarding eye health.