<human>: I'm going to the beach this weekend and want to know which sunscreens are best.
<bot>: The most important thing when choosing a sunscreen is that it contains an SPF of at least 15, as this will protect you from UVA and UVB rays. You should also look for one with broad-spectrum protection, meaning it protects against both types of UV radiation. Additionally, make sure the ingredients list is short and simple so you can be sure it's safe for your skin.