At some time or other all of us have used make-up that actually was very old, because why should you throw away something that is not finished? The purpose of expiry dates, however, is not merely to make you buy new products. This is because not only does old make-up work less efficiently, but it could also seriously damage your skin.
According to Hadley King MD, a dermatologist at SKINNEY Medspa in New York, the active ingredients can become less effective with time. “For example, after the expiry date of a base layer with SPF the sun protection cannot be as strong as that of the fresh product,” says King. This also applies to products that contain salicylic acid for the prevention of acne or retinol to prevent fine creases.
Your expired make-up can also hide bacteria. And although make-up is naturally bacteria-resistant, this can also get weaker as the make-up gets older. If it gets onto your skin, it can cause an irritation and little pimples, as in acne. If it gets close to your eyes, bacteria can build up and even cause infections and conjunctivitis (when the eyes become red and scratchy), says King. Lipstick can cause swollen lips.
Here are a few possible effects
– Adult acne
– Dry spots
– Excessive greasiness
– Eye infections
– Sun damage (SPF becomes less effective)
Replace your mascara every three months, your eye pencil and eye shadow every six to twelve months and lipstick every 18 months. The average life of base layers, powder and other make-up is 12 months.
Even if using old make-up doesn’t kill you, it is still not worth its while to get an infection. So, rather keep an eye on the expiry dates of your make-up.