I usually stock up in the early spring. Johnson & Johnson ® makes a good product, but the best is Coppertone. ®
In the final analysis, Writer's Block is helpful, but the best practice is to lay down a good base so that your body's natural protection can take hold. One way to do this is to wander back into the reference stacks at your local library, then strip to the buff.
Be sure to turn after five minutes, and not to expose yourself longer than ten minutes total, to start.
Use eye protection.
Winner of the Robert Benchley Society Award for Humor