As someone who has built sunscreen into her everyday beauty routine, there are three boxes that it must check off. First, it has to have an SPF that actually protects my skin. I try to pick products that have an SPF of at least 30. Secondly, the product has to wear well alone since I do not wear makeup on a daiily basis as well as under makeup. Lastly, it has to feel comfortable on my skin — with zero white/grey cast and greasy residue.