Mascara is a staple in most makeup routines, offering volume, length, and definition to lashes. However, like all cosmetic products, mascara has a limited shelf life. Understanding when to replace your mascara is crucial for both the effectiveness of the product and the health of your eyes.
Recommended Mascara Shelf Life: 3 to 6 Months
Health and beauty experts generally advise replacing mascara every three to six months after opening. This recommendation is primarily driven by the potential for bacterial growth within the product.
“Most makeup products, including mascara, have a ‘period after opening’ symbol, which indicates how long the product is good for after opening,” explains makeup artist Tara KP Troszak. “All the tubes of mascara currently in my collection say six months.” However, she emphasizes that this is a guideline, and “when in doubt, throw it out.”
The actual lifespan of a mascara tube can depend on several factors, including:
- Frequency of use: Daily users may need to replace mascara sooner than those who use it occasionally or rotate between different brands.
- Application habits: Pumping the wand in and out of the tube introduces air and potential contaminants, accelerating formula degradation and bacterial growth.
- Hygiene practices: Sharing mascara or using it after an eye infection significantly increases the risk of contamination.
- Storage conditions: Extreme temperature changes can compromise the mascara's formula.
For makeup artists who use the same tube on multiple clients, the risk of contamination is even higher, and the mascara may not last the full three months.
Why Replacing Mascara is Crucial: Health and Performance
While it might seem wasteful to discard a mascara tube that isn't completely empty, doing so is essential for protecting your eye health and ensuring optimal product performance.
Preventing Eye Infections
Mascara tubes, especially those of liquid or cream formulas, can become breeding grounds for bacteria. “Bacteria growth becomes an issue with exposure to air,” Troszak notes. “Every time you use your mascara and take the wand out of the tube, you’re pumping air into the product. It becomes a breeding ground for bacteria.”
Introducing this bacteria to your eyes can lead to serious health issues, including:
- Eye infections: Such as conjunctivitis (pink eye) and styes.
- Rashes and irritation: Affecting the delicate skin around the eyes.
- Corneal ulcers: A severe condition that can impact vision.
“It may seem wasteful but it’s for the safety of your eyes and overall health,” emphasizes beauty expert Porter. “You need to replace your mascara due to fast bacterial growth in a formulation going near or in your eye. This will prevent serious infections from occurring.”
Maintaining Product Performance
Beyond health concerns, using old mascara can negatively impact its performance. Over time, the formula can dry out, leading to:
- Clumping: Resulting in an uneven and spidery lash appearance.
- Flaking: Causing mascara to fall into the eyes throughout the day.
- Reduced volume and length: The mascara may no longer deliver the desired effect.
“If you hang on to your mascara past its prime, the product is likely to no longer perform how you want it to,” Troszak says. “Even if it’s still safe to use, it might have a clumping and flaking consistency, and be drier, or provide less length or volume.”
Signs It’s Time to Toss Your Mascara
While the 3-6 month guideline is a good starting point, it's important to pay attention to other indicators that your mascara may have expired:
- Changes in texture: The mascara has become noticeably drier, clumpy, or stringy.
- Altered smell: A foul or unusual odor indicates bacterial contamination.
- Changes in color: Any significant shift in the mascara's color.
- Irritation: Experiencing redness, itching, or watering after application.
- Contaminated packaging: If the wand falls on the floor or the container is damaged.
- Past the expiration date: Even if it seems fine, adhere to the recommended replacement schedule.
“If the mascara does not look, feel, or smell the way it did when you bought it, or if you've used it after having an eye infection, discard the mascara even if it is before the three to six month recommendation,” advises Joshua Zeichner, M.D., director of cosmetic and clinical research in dermatology at Mount Sinai Hospital.
Can Mascara Last Longer? Examining the Evidence
While the expert consensus points to a 3-6 month shelf life, some discussions online suggest that mascara might be less prone to bacterial growth than commonly believed, due to its low water content and preservatives. However, even if the bacterial load isn't as high as feared, the risk to sensitive eye areas remains significant.
“Generally speaking, if you are regularly using your mascara it should be replaced every three to six months,” says Dr. Zeichner. “The issue is that dirt, oil and bacteria can easily accumulate around your eyes and hitch a ride onto your mascara wand - not really a risk you want to take with a product that's applied to a sensitive area.”
Therefore, even if a tube appears to be in good condition past the recommended timeframe, it's still best practice to err on the side of caution and replace it to safeguard your eye health.
Tips for Extending Mascara Life (and Hygiene)
While you can't prevent expiration indefinitely, you can take steps to maintain your mascara's quality and hygiene for as long as possible:
- Avoid pumping the wand: Instead, twist the wand gently as you pull it out of the tube to minimize air exposure.
- Wipe excess product: Remove any excess mascara from the wand by wiping it on the rim of the tube opening.
- Close the cap tightly: Ensure the cap is securely fastened after each use to prevent drying and contamination.
- Store in a cool, dry place: Avoid storing mascara in hot environments like a car or bathroom, as temperature fluctuations can degrade the formula.
- Never share mascara: Mascara is a personal item and should not be shared with others, even close friends or family.
- Clean your tools: Regularly clean your eyelash curler and makeup brushes to prevent cross-contamination.
Considering sustainability, some brands offer refillable mascara options with recyclable packaging, such as Kjaer Weis and Izzy Zero Waste Beauty. These can be a more environmentally conscious choice for consumers.