Here's one to know: The Fastest way To Fix A Finger Nail
The Fastest Way to Repair a Torn Nail
Patch it with a tea bag. Nails can tear for many reasons: They're weak; they're soft; they've been soaking in water for too long, which softens them further.
Whatever the cause, cut a tiny piece of paper from a tea bag (it should be big enough to cover the entire tear), apply a bead of nail glue to the paper (Krazy Glue works in a pinch), then press it on top of the tear, says Essie Weingarten, founder of Essie Cosmetics. Allow the glue to dry, then gently file the top of the paper so that it is smooth and flush with the nail. Finish with a layer of base coat, two coats of nail polish, and a topcoat.
Quick tip: Wear rubber gloves when washing dishes or using cleaning products. Water and chemicals can weaken nails and make them more likely to tear.