Based on the provided reference, using nail repair powder involves filing the nail to prepare it for the repair. Here's a breakdown of how it's likely used (though the exact application isn't detailed in the provided excerpt):
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Prepare the Nail: Begin by filing the surface of the damaged nail with a glass file. This includes filing underneath the nail if necessary and along the top to smooth any rough edges.
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Apply the Nail Repair Powder: (The video abstract doesn't provide this step, but based on common nail repair powder usage...) Apply a thin layer of nail adhesive or resin to the damaged area. Then, dip the nail into the repair powder or sprinkle the powder onto the adhesive.
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Build and Shape: Repeat the adhesive and powder application until the damaged area is built up to the desired thickness and shape.
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File and Smooth: Once the repair has dried and hardened, use the glass file to file and shape the repaired nail to match the natural nail.
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Finishing Touches: File just as you normally file your nails to create your desired shape.
