The primary difference is the delivery system and resulting user experience. A pen, like JUTAVIT, is a self-contained, portable applicator. It's less messy than dipping fingers into a pot of cream and allows for targeted placement exactly where you want it—on the nail and cuticle—without spreading product onto larger areas of skin. This can be more hygienic and economical. In contrast, creams or lotions in jars or tubes are better suited for covering larger skin areas but can be harder to apply neatly to just the nail. The pen's formula is also designed to create a thin, adherent film on the hard nail surface, which some users may prefer for a less greasy feel. It's a matter of personal preference and routine; the pen format is often chosen for its convenience in on-the-go use, such as after the gym or pool.