**Instructions for Using Black Straight Nail File - 100/180:**
1. **Preparation:**
- Start with clean, dry nails. If desired, you can soak your nails in warm, soapy water for a few minutes to soften them.
2. **Identify Nail Areas:**
- Recognize the areas of your nails that need shaping or refining. The 100 grit side is ideal for shaping and shortening, while the 180 grit side is for refining and smoothing.
3. **Shaping (100 Grit Side):**
- Hold the nail file at a slight angle and shape your nails according to your preference. File in one direction, moving from the sides towards the center to achieve a uniform shape. Take care not to file too aggressively to avoid damage.
4. **Refining (180 Grit Side):**
- Flip the nail file to the 180 grit side. Use this side to refine the edges and surfaces of the nails, smoothing out any roughness left by the shaping process.
5. **Straight-Line Technique:**
- Utilize the straight shape of the nail file to create a clean and straight-line edge. This is particularly useful for achieving a square or squoval nail shape.
6. **Contouring (Optional):**
- If desired, contour the edges of the nails for a more rounded or almond shape. Use gentle, sweeping motions to refine the contours.
7. **Check for Symmetry:**
- Regularly check for symmetry and balance between the nails to achieve a cohesive and polished look.
8. **Final Inspection:**
- Inspect the nails for smoothness and uniformity. Run your fingertips over the nail surface to ensure there are no sharp edges or uneven areas.
9. **Cleanse Nails:**
- Wipe or rinse the nails to remove any nail dust or debris. This step is important before applying nail polish or continuing with additional nail care steps.
10. **Maintenance:**
- Clean the nail file after each use, either with a nail brush or a damp cloth. Store it in a dry and cool place.
**Note:** Avoid excessive filing, as this can weaken the nails. Regular, gentle maintenance is key to healthy and well-groomed nails.