"I like to use builder gel for extending nail length or [as an] overlay for natural nails, and hard gel as a topcoat to make natural nails more durable," says Qin. On the other hand, Kandalec ...

"BIAB is a great overlay product for most nail lengths," says Cappella, "but as the nail reaches 3-4mm at the free edge, we'd suggest switching over to a hard gel such as Gel Pot or Proform to ...