Question:
Is it safe to use last year's sunscreens, or should I replace them? None of them have a sell-by or use-by date. And when I contacted a couple of manufacturers, they recommended I replace them (why was I NOT surprised to hear this?).
We have several different types, including one that's zinc-based.
Answer:
Both chemical and physical sunscreens can
deteriorate over time, so check the bottle or tube for the expiration date.
If you can't find one, or if the product seems to have dried up or changed
color or consistency, it's better to be safe and just buy a new one. The few
dollars you might have saved by using last year's bottle just aren't worth
the pain and suffering your little one will endure if she gets a sunburn.