We're heading down to the Caribbean for a week's vacation next month. I have fine, thin hair, and on our last beach vacation, I got a sunburn on the top of my head. I have a hat, but that doesn't help while out in the ocean. Does anyone have any recommendations for sunscreen to protect the scalp? I'm more worried about protecting my scalp than my hair, so if it isn't CG, I'm willing to sacrifice for a week.

The only thing I've found so far is Fairy Tales Coco Cabana Leave-In Sun Spray, but I can't tell how well that protects the scalp as opposed to the hair. I'd rather not have to resort to spraying my head with something like Banana Boat spray, but I also don't want to burn my head.

Thanks!
Hair:3A, fine texture, normal porosity, normal elasticity. Low density.

Shampoo: CJ Daily Fix, Hello Hydration
RO: SS Caitlin's Conditioner
LI/Styler: SS Protein Spray, CIAB, Curly Hair Solutions Curl Keeper

Treatments: SS RPT and SS DD