A pretty packaging can draw you in, but that doesn’t mean the product integrity will last. Some packages make products expire faster than you’d think. For example, skin-brightening ingredients are relatively unstable and tend to degrade faster the more it’s exposed to air and light. Here, we break down what you need to know to prevent your moisturizers, serums, eye creams, and more from breaking down. What they’re good for: Rich creams and moisturizers. Make sure you use a small spatula to scoop out the product, especially if you’re sharing the product with multiple people. Constantly dipping your hands in a tub/jar can compromise the formula. What they’re not so good for: Scrubs and body wash—or anything else that you use in the shower. If water gets in, their formula can get compromised  and also get moldy. Moisturizers with skin brightening agents, tend to hold up better in tubes and pump bottles.