While fall may be in the air, there’s still a good six weeks left of summer, and the sunscreen market is a hot topic.    Endless options are heavily stocked on store shelves from mineral to chemical offering varying levels of protection, and an array of formats from which to choose. Currently, the top-growing sunscreen formats in search in the US are roll on and stick. Roll-On Formats, a Seamless Sunscreen Option  While slathering on sunscreen can feel like a chore, especially fo...