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How to File Nails Correctly: Grits, Technique & Removal
Filing nails is one of those skills that separates a polished, professional finish from a rushed one. Whether you’re shaping natural nails, refining a set of acrylics, or prepping for gel removal, the file in your hand and how you use it makes all the difference. In this guide, we cover grit selection, correct technique, and step-by-step removal using the right tools for every service.
What Are Nail Files Used For?
Nail files are more versatile than most clients realise. A professional nail tech reaches for a file at almost every stage of a service:
- Shaping: Defining the nail outline, whether square, almond, coffin, or stiletto.
- Prepping: Lightly buffing the nail surface to remove shine and improve product adhesion.
- Refining enhancements: Smoothing out acrylics, hard gels, or builder gel after application.
- Removing product: Filing down gel polish or enhancement layers before soak-off.
The key is matching the right file to the right task. Using the wrong grit, especially on natural nails, can cause thinning, splitting, and long-term damage that your clients won’t thank you for.
Understanding Nail File Grits
Grit refers to the coarseness of the abrasive surface. The lower the number, the coarser the file and the more material it removes with each stroke.
80 grit is very coarse. It’s designed for heavy-duty work like shaping and reducing thick acrylics or hard gel extensions. Not suitable for natural nails.
100 grit is coarse and ideal for initial shaping of extensions and filing down product bulk efficiently.
180 grit is a medium, versatile grit for refining extensions, surface work, and buffing off the gel polish top coat before soak-off.
240 grit is fine and gentle enough for natural nails, smoothing edges, and finishing surfaces before polish application.
As a general rule, the more natural or thin the nail, the higher the grit you need.
Choosing the Right BlazingStar Nail File
The BlazingStar Nail Files from VLDirect come in six variants, giving you the right tool for every stage of your service.
BlazingStar Straight and Square 80/80 Your go-to for shaping and reducing thick acrylic or hard gel enhancements. Both sides cut through product quickly, making them ideal for infills and restructuring. Keep these away from natural nails entirely. The square format works well for flat surface filing and squaring off free edges, while the straight is a classic all-rounder for bulk removal.
BlazingStar Straight and Square 100/100 A step up in finesse from the 80s and great for general extension shaping and refining product after application. The square version is particularly useful for coffin and square nail styles where clean, straight lines matter. The straight 100/100 is a reliable workhorse that most nail techs will reach for daily.
BlazingStar Straight 180/240 This is your file for natural nails and finishing work. The 180 side removes gel polish shine or lightly shapes soft enhancements, while the 240 side is gentle enough for natural nail shaping and smoothing the free edge before polish. If you keep one file in your apron pocket, make it this one.
BlazingStar Curve 100/100 The curved body follows the natural contour of the nail, making it easier to work along the c-curve of an enhancement without flattening it. Excellent for blending and surface refinement on sculptured sets.
The Dos and Don’ts of Nail Filing
No matter how experienced you are, it pays to revisit the fundamentals. These habits protect both your client’s nail health and the quality of your work.
Do:
- Always file dry nails. Wet nails are softer and far more prone to peeling and splitting.
- File in one direction. Uni-directional strokes maintain nail integrity; sawing back and forth creates micro-tears.
- Hold the file at a 45-degree angle when working the free edge, as this bevels the tip cleanly.
- Start with the coarsest grit you need, then refine upward.
- Replace files regularly. A worn file drags rather than cuts, requiring more pressure and generating more heat.
Don’t:
- Use 80 or 100 grit on natural nails.
- Apply heavy pressure. Let the abrasive do the work.
- Skip aftercare. Always apply cuticle oil after filing to restore moisture.
How to Shape Natural Nails: Step by Step
Step 1 – Trim first if needed. If the nail is significantly longer than the desired shape, clip it down before you start filing. It saves your file and saves time.
Step 2 – Choose your file. For natural nails, reach for the BlazingStar Straight 180/240. Start with the 180 side if there are rough edges, then finish with the 240 for a smooth tip.
Step 3 – File the free edge. Hold the file at a 45-degree angle under the tip and file in one direction, from the outer corner toward the centre. Repeat on the other side.
Step 4 – Refine the sides. Use gentle strokes along the sidewalls to achieve the desired shape. Check both hands regularly to keep them symmetrical.
Step 5 – Smooth and finish. Run the 240 side lightly across the surface to remove any roughness before applying polish or gel.
How to Shape and Refine Nail Enhancements: Step by Step
Step 1 – Reduce bulk. Start with the BlazingStar Straight or Square 80/80 to bring down product volume quickly. Use sweeping strokes across the surface, working with the natural contour of the nail.
Step 2 – Define the shape. Move to the Straight or Square 100/100 to refine the outline, squaring the free edge, tapering the sides, or elongating the tip to the desired style.
Step 3 – Smooth the surface. Finish with the Straight 180/240 or Curve 100/100 to remove any file lines and create a surface ready for colour or top coat.
How to File for Gel Polish Removal: Step by Step
Filing before soak-off is essential. Breaking the seal of the top coat allows acetone to penetrate the gel properly, which reduces soak time and minimises stress on the nail plate.
Step 1 – File off the shine. Use the 180 side of the BlazingStar Straight 180/240 to buff across the entire nail surface. You’re not removing the gel, just breaking the gloss of the top coat.
Step 2 – Check your work. Every area should look matte and dull. Any remaining shine means the acetone won’t penetrate there properly, so give those spots another pass.
Step 3 – Soak in acetone. Wrap each nail in an acetone-soaked cotton pad and foil, or use removal clips. Leave for 10 to 15 minutes.
Step 4 – Remove residue gently. Slide off the softened product with a cuticle pusher. Never force or peel. If it’s not lifting cleanly, rewrap and wait another five minutes.
Step 5 – Apply oil. Acetone is dehydrating. Finish every removal service with cuticle oil and hand cream.
Stock Up on BlazingStar Nail Files at VLDirect
The right file makes every service cleaner, faster, and safer for the nail. The BlazingStar range covers every grit you need, from the heavy-duty 80/80 for extension work to the gentle 180/240 for natural nails and finishing.