I try not to buy anything except food, travel and other essentials in January. Instead, I focus on auditing and reorganizing all my beauty supplies.
Some active ingredients lose potency over time, but advances in cosmetic science have made it easier to preserve product effectiveness if stored correctly.
Wet products like lotions and creams have a much shorter life expectancy compared to dry powders, which can last for ages, even years.
For mascara, you need to use it within three to six months once opened, while products high in alcohol like hairspray can last much longer.
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