A polishing buff is used as the final step in a natural nail manicure or pedicure. After shaping the nail with a file, use the coarser side of the buff (e.g. 400 grit) to smooth out ridges and surface irregularities. Then switch to the finer side (e.g. 3000 grit) and polish with light, sweeping strokes until the nail has a natural glossy shine. Do not press too hard — let the abrasive do the work. Avoid over-buffing, which can thin the nail plate.

Grit indicates coarseness: 80 grit is extra coarse for artificial nails and heavy shaping, 100 grit is coarse for artificial nail work, 150 grit is medium for general shaping, 180 grit is universal for both natural and artificial nails, 240 grit is fine for smoothing and pre-coating prep, and 400/3000 grit is for polishing. For natural nails, always use 180 grit or higher to avoid damage. For artificial nails or acrylics, 80-150 grit files work best.

Disposable mineral nail files (sold in packs of 5 or 25) are designed for single-client use — dispose of them after each service for maximum hygiene. Laser nail files and reusable metal files should be cleaned with a brush after each client, disinfected with a salon-grade solution, and sterilised via autoclave or dry heat oven. Store all files in a clean, dry place away from direct sunlight to preserve the abrasive surface.