Sun & Skin Care Research’s Ocean Potion brand has embarked on the “Ocean Potion Sandcastles in the Sun” tour, which will make several stops at beaches throughout the US.   On the tour, professional sand sculptors Rusty Croft and Kirk Rademaker—aka the Sand Guys—will teach parents and kids how to make sandcastles using simple tools. Families will be invited to participate in sandcastle-building competitions and winners will receive T-shirts and other prizes. A branded shade station will be a...