Do I need to buy a new bottle of sunscreen every summer?
Can I use the leftover sunscreen from last year or do I need to buy a new bottle every summer?
Expert Answers
Patricia Treadwell, pediatric dermatologist
Both chemical and physical sunscreens can deteriorate over time, so check the bottle or tube for the expiration date. If you can't find a date, or if the product seems to have dried up or changed color or consistency, it's better to be safe and buy some new sunscreen. When you consider the pain and skin damage your toddler will suffer if she gets a sunburn, it's not worth using last year's bottle just to save a few dollars.
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