Please choose the correct ending to complete the given sentence: Health: [header] How to strengthen weak fingernails naturally [title] Bypass buffing. [step] Buffing is used to even out ridged fingernails. What most women don't know is that ridges in nails are a healthy part of the finger.

Ending1: The thickest part of the nails are the healthiest parts, and the dips are actually deficits in thickness. Therefore, when you buff your nails off, you're buffing down the stronger, healthier portion of the nail. Ending2: Thus, it has been utilized extensively to correct nearly all rough or jagged cuts and splinters (not many women can actually clean up a sharp jagged edge! ). However, this doesn't mean that buffing is the better choice. Ending3: As such, strengthening means holding the nail firmly and confidently. [substeps] Many therapists recommend doing this if you have any sharp or aggravating nails. Ending4: Therefore, you can use soft, gentle buffing to smooth out tough, jagged fingernails. [substeps] While buffing is a very gentle method, do not use a tack pad on your nails.

Answer format: ending1/ending2/ending3/ending4