I apply sunscreen to my face prior to riding, and what happens is 20-30 min into the ride your starting to sweat, the sweat mixes with sunscreen and ends up getting into my eyes which stings. I tried 3 or 4 different brands and usually get the unscented but it's not always clear on the labels if it actually is unscented. Currently using Neutrogena ultimate sport with SPF 70 and still have the issue of it getting into my eyes and stinging.
I'm not plastering the sunscreen on my face, or applying it that close to the eyes.
If you read this and happen to know of a product that is non sting, let me know.