If you visit the studio you will find there are a few sunscreens to choose from. My favorite is the Lira BB Creme'. It is tinted, provides moisture and SPF 30. This allows you to wash, apply and go! I like simple. I also have the Hale and Hush SPF available for those that want a non-tinted option. Both of these products are great for daily use and/or beach use.
Sunscreen for your body a concern, it should be. I personally use the MD Solar Sciences Quick Dry Body Spray, SPF 40. MD Solar makes many products, I like this one the best. It is easy to use and water resistant.
The biggest mistake people make with sunscreen is not reapplying. Remember that's really where things start to go wrong. If you don't reapply you aren't protected. When should you reapply, after swimming/sweating and drying with a towel or every 2 hours whichever comes first.
I will quietly remind you that sunscreen is your best beach companion. It is the one thing that if you use regularly you will age graciously and improve your overall health.
Go out, enjoy the weather! Take along some sunscreen. :-)