Alright so I'm a teenager with hyperpigmentation all over my forehead and chin and one annoying mark on my cheek. I have been avoiding sunlight as much as possible and it's pissing me off. Soon I will be volunteering at a summer camp all day... and now I'm scared that even with Sunblock and a hat, the marks (Which are fading slightly) will get worse. I do NOT want to that to happen.

I don't want to abandon my friends who are also volunteering... but now I'm really anxious.

Will sunblock and a hat be enough? Or I am I screwed in terms of the marks if I work in the sun all day?