Some salons do more thorough work on your nails shape by performing two additional steps - fill out any ridges or uneven surfaces on the tip surface of your natural nails and trim off the tip surface in a uniform way to give your nail tips a smooth finish and buff shape. This increases the strength of your nails and makes the shape look better. Some services also include buffing which can be done by itself. Buffing how many days does acrylic nails last is done with a special machine that buff out any scratches on your nails making it smoother and shinier, much like how car paint looks when it's polished. It also enhances the colour of the paint on your acrylic nails if you have chosen something that's darker, e.g., dark red or black etc. We create professional-grade nail products at discount prices. Unlock insider pricing when you log in.