* Weak Hold: Nail varnish is designed to coat the nail, not to adhere two surfaces together. The bond will be very weak, and the false nails will likely pop off quickly and easily, often within minutes or hours.
* Damage to Natural Nails: The chemicals in nail varnish can be harsh and drying. Using it as an adhesive can weaken your natural nails, making them brittle and prone to breaking.
* Uneven Application: It's difficult to apply nail varnish evenly enough to create a reliable bond. This can lead to air pockets between the false nail and your natural nail, increasing the risk of lifting and bacterial growth.
* Messy Removal: When the false nails inevitably come off, you'll be left with a gummy, sticky residue of nail varnish that's difficult to remove.
* Not Designed for the purpose: Nail varnish simply is not designed to be an adhesive.
Better Alternatives:
* Nail Glue: This is the best option. It's specifically formulated to bond false nails to natural nails.
* Adhesive Tabs: These are double-sided sticky tabs that offer a temporary hold. They're good for a few hours, but not for long-term wear.
* Gel Nail Polish: Some people use gel polish with a UV/LED lamp to apply false nails. This *can* work but requires the correct application technique and isn't guaranteed to be as strong as nail glue. It's also more difficult to remove.
In summary, save your nail varnish for painting your nails, not gluing things to them. Use proper nail glue or adhesive tabs for a better, safer, and longer-lasting result.