If a BB cushion says SPF 50*, can I skip sunscreen?

I received a Miba BB Cushion as a gift from an acquaintance. The box containing the product had "SPF 50*" written on it. Wow~~~ For a lazy person like me, it was such a surprising and welcome discovery.

In that case, does that mean I don't need to apply sunscreen separately if I use a BB cushion written like this?

To be honest, after applying sunscreen, my skin feels fine at first, but as time goes by, it starts to feel dry. Also, when I wash my face, I have to apply a generous amount of cleanser, and since it doesn't feel like it washes off cleanly in one go, I end up washing my face two or three times, which is quite a hassle. That doesn't mean I've given up on being a woman, though (women have to take care of themselves until they die, right? lol). Of course, it might also be my fault for making excuses because I'm lazy.

Finally, I will ask you one more time.

I'm really curious if I don't need to apply sunscreen separately if I use a BB cushion that says SPF 50*.