While the scrub alone can get you summer ready skin in a single step, the body butter is also worth a try. (northwestblonde.com)
This figure illustrates the ease with which grams of many different types of oxide nanoparticles can be prepared in a single step. (sciencedaily.com)
This baby bottle has a skid free base and the easy to latch nipple can be screwed in a single step to make milk preparation easy and leak free. (babieslounge.com)