I'm curious about the UV protection effects of sun cushions and sun sticks.

There are various types of sunscreens, such as sun creams, sun cushions, and sun sticks. I've heard that with sun cream, you need to apply a generous amount—about the size of a 500-won coin—to ensure proper UV protection. However, I want to use sun cushions or sticks because they don't get on your hands, are easy to apply, and are convenient to carry. Yet, I've also heard that they don't provide proper UV protection because you tend not to apply a large amount. I'm curious if cushions or sticks actually offer effective UV protection.