How often should one consider replacing mascara to maintain optimal eye health and ensure the best possible makeup application? Various factors come into play, such as the product’s expiration date, the frequency of use, and the potential for bacterial contamination. Could it be that keeping mascara beyond its recommended lifespan might pose risks, such as eye infections or irritating reactions? Additionally, how does the climate or environment influence the longevity of the mascara’s formula? For instance, does exposure to heat or humidity accelerate the degradation of the product, thereby necessitating more frequent replacements? What about different types of mascara—do volumizing, lengthening, and waterproof formulations have varying shelf lives? How can one discern subtle changes in texture or aroma that might indicate it’s time to dispose of the tube? Are these considerations truly as paramount as they seem, or are personal preferences just as significant in the decision-making process?