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Customer Questions

Where are your files made? Which country?

Bona Fide Beauty Glass Nail Files are made in The Czech Republic from 100% Genuine Czech Glass of the finest quality. Czech ‘Bohemian’ glass is a centuries old traditional form of glassmaking globally recognized for its superior craftsmanship & beauty. These are the real deal!

We manufacture a limited-edition range of beautiful, authentic Czech glass files featuring our original designs. 

We use state-of-the art specialised technology to craft our premium quality Czech glass files. The finishing touches and final decorations are done by hand by our highly skilled Czech staff.

We have high standards. Our Czech glass files undergo numerous quality checks during manufacturing as well as postproduction to ensure you receive the highest quality, most beautiful, pristine product! 

When you purchase from Bona Fide Beauty, you are supporting a small, hard-working Czech team of unique individuals who take great pride in their authentic Czech made products. 

Are your files lead-free?
 
Yes, Bona Fide Beauty Czech Glass Files are 100% lead-free.

How do I use glass nail files?
Bona Fide Beauty glass files are easy to use. Simply file the nails with a light touch, in any direction. Unlike typical files, they file in any direction without damaging the nail.

Czech Glass Nail Files can take a little time getting used to, especially if you’ve been using metal files or emery boards in the past. Take it slow and be patient, we are confident you will enjoy the results.

How often should I use my file?
Bona Fide Beauty Czech Glass Files are designed for regular, long-term use. We recommend using them on a regular basis to file, shape and strengthen the nail. You can use your glass nail file as often as desired, it really depends on how fast your nails grow.

Will they help strengthen my nails?
Typical nail files can tear, shred and damage the delicate keratin layers of the nail, devastating your nail health.

On the other hand, Czech glass files feature a uniform, fine grit that seals the natural keratin layers together as you file, leaving nails smooth and supporting positive nail health and strength. Czech glass files can improve your nail health and strength, allowing you to grow long, healthy, strong, beautiful nails.

Do the files come with a protective sleeve?

Bona Fide Beauty Files either come with a protective plastic sleeve or plastic hard case, please check the Amazon listing carefully prior to making your purchase.

The protective hard case offers the greatest protection to you file. Store your glass nail file in a hard case for extra protection against breakage when carrying in your handbag or luggage.

How do I care for my glass nail file?
We recommend a few simple care tips to ensure you get the most out of your Bona Fide Beauty Czech glass file.

  • Use gentle pressure and try not to force down on the file with excessive force.
  • Dropping the file from a height, bumping it against a hard surface, or placing it under heavy weight can lead to chipping and breakages, so please be careful when handling your glass file.
  • File your nails over surface, like a tabletop, counter, bed or towel to protect it from accidental drops.
  • Store your glass nail file in a hard case for extra protection against breakage when carrying in your handbag or luggage.
  • Store your files securely, avoid storing under heavy weight or pressure, such as in a bag or in a drawer where heavy items may unknowingly be placed on top of it.
  • Store your file in its original hard case or sleeve when not in use to protect your file



How long will the filing surface last?

Bona Fide Beauty Czech Glass Nail Files are crafted from premium Czech ‘Bohemian’ glass, tempered (toughened) to ensure the glass is strong, wear-resistant & retains the integrity of the filing surface after multiple uses.

If treated with care they can last you a number of months to years. The surface of the file is chemically etched so it won’t wear off like an emery board or other cheaper nail file alternatives.

In our experience, most customers choose to replace their files after 12 - 24 months, while others may keep their glass file for 5+ years! As you continue to use your glass file, the surface may feel smoother over time, but will still file nails efficiently.

Czech glass files are ideal for professional salons and personal use. They are reusable and easy to clean, making them highly economical. They do not corrode, rust, rot or become unhygienic like other files, which should be discarded after a few uses to avoid negative hygiene risks.

How do I clean my glass nail file?
Glass Nail Files have a non-porous glass surface, which does not absorb water, thus preventing the growth of unhealthy bacteria and fungus.

To clean your glass file, simply rinse the abrasive surface under running water and let the file dry out on a soft towel. 

If desired a gentle anti-bacterial or disinfectant solution can be applied to the abrasive surface to disinfect and sterilize the file. Always avoid the colored/decorated handles. 

Avoid exposing files to solvents, harsh disinfectants and high temperatures since the decoration may deteriorate in such conditions.

What grit are your glass files?

Glass files do not conform to typical grit as grit is an ideal measurement for determining the roughness of sandpaper, or in the case of nail files, it refers to the roughness of metal and paper files. The roughness of Czech Glass Files cannot be easily compared with the roughness of paper or metal files, they are completely different surfaces. The main difference is that paper and metal files have grinding grains separately attached to the surface of the file, while glass files have grinding elements formed right out of the surface of the glass body.

We classify our standard range as fine~medium grit, they fall within the 240 - 180 grit category, leaning more towards the 240. They have a higher grit then most emery boards, but a lower grit then metal files, which are generally quite coarse and harsh on natural nails. When you run your finger along the abrasive surface it feels similar to that of a cat's tongue, as unusual as it sounds it is surprisingly accurate.

Bona Fide Beauty Czech glass files suit most nail types, from normal, healthy nails to thin, sensitive nails.

Some people cannot stand the filing sensation on their nails. For people with particularly thin, delicate and sensitive nails, we recommend fine grit files. Bona Fide Beauty fine grit files have a slightly finer grit that our standard fine~medium grit file range. The grit feels like soft glass, it does not feel abrasive at all, however it files the nails extremely well.

Please check our Website & Amazon listings if you are ever unsure.



Grit Guide for Metal Nail Files


900 - 12,000 Grit [Buffers]
 Smoothing and shining natural and artificial nails.


400 - 900 Grit [Extra Fine]
 Soft and normally is only used for finishing natural nails and not for shaping/filing. Useful for removing ridges, stains and polishing natural nails. Ideal for preparing all nail surfaces for buffing and shining.
240 - 400 Grit [Fine] 
Ideal grit for buffing natural nails to a smooth finish or buffing away stains. It is also recommended for use on fragile, weak or damaged nails. Ideal for finishing work on acrylics, wraps, and gels.


150 - 240 Grit [Medium]
 Good for lightly shaping the free edge of gels or acrylics. Sometimes used to lightly etch the natural nail in preparation for product.

 Grits higher than 220 are good for filing, shaping and smoothing acrylic nails as well as the free edge of natural nails. Please note, if you have weak or damaged nails then you should probably try a finer grit.


100-150 Grit [Coarse] Ideal for reducing the length of and shaping acrylics or gels


60 - 80 Grit [Extra Coarse]
 This grit is quite rough and should not be used on natural nails. A file this coarse should only be used on artificial nails. Good for shaping very thick or misshapen acrylics or gels.

The file is giving me shivers down my spine, like nails on chalkboard. What do I do?
While Bona Fide Beauty Czech glass files suit most nail types, you may be the rare exception and have very thin, sensitive nails. It is worthwhile considering a fine grit file if you haven't already.

Try giving your nails a short 10 minute soak in warm water to help soften the nails. You can also try dipping the abrasive surface in water in-between filing to help dull the filing sensation.

It takes too long to file and trim my nails. What do I do?
You may have particularly thick and strong nails. Bona Fide Beauty Czech glass files are a gentle nail care tool designed for regular use, however, if you are finding them too gentle, we recommend using them alongside other nail care tools such as nail clippers. Use your clippers to remove the bulk of the nail follow up with your glass file as a finishing touch to shape and smooth the nail’s edge. The glass file will help seal the keratin layers together, leaving nails smooth, jagged free and beautifully shaped.

Can I use it on acrylic nails?
Glass files can be used on acrylic nails. When doing so we recommend occasionally dipping the abrasive surface in water for best results.

Are these good for musicians?
Yes! These are perfect for musicians. We have heard wonderful things from some talented guitarists, pianist and harpists. Glass files are the perfect nail care tool for keeping your nails trim and smooth.

I am a nail technician, are these suitable for professional salons?
Absolutely! Bona Fide Beauty Czech glass nail files are ideal for salon professionals. They can be washed and sterilized in-between clients.

Is it normal if my file squeaks as I file?

Yes, this is perfectly normal. It is caused by the friction between the glass and your nail.

When I file, I can smell an odour. Is this normal?

On rare occasions, some people experience a slight smell after filing, this is very normal.

As you file your nail, you are exposing bacteria that resides in the nail, this could result in an odour. Also, the filing action creates a lot of friction between the glass file and nail.

We recommend keeping your nails as clean as possible between filing.

You can mask the smell by using an organic air freshener or essential oil diffuser while you file. Consider a hand soak with tea tree or eucalyptus essential oil, or consider using a anti-bacterial hand cream. 

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