Features: Bright color, high saturation, good adhesion, no shrinkage, no cracking, no yellowing. 3-in-1 design, our nail polish pens are versatile. With these pens, you don't need to use glue or seal. Durable and easy to disassemble, there are 20 colors in total, you can choose at any time. Lasts for at least 3 weeks, giving you beautiful and super shiny nails. They are suitable for nails, toenails, etc. They are easy to use and suitable for professionals or at home. and ingredients. High quality and soaking nail polish. Easily makeup in just a minute. Product Features: Made of high-quality materials, , odorless, easy to use, one pen solves all problems. Bright color, high saturation, good adhesion, no shrinkage, no cracking, no yellowing. Durable and easy to disassemble, there are 20 colors in total, you can choose at any time. 3-in-1 design, our nail polish pens are versatile. With these pens, you don't need to use glue or seal. They are suitable for nails, toenails, etc. They are easy to use and suitable for professionals or at home. 1. Use a cuticle trimmer to deal with dead skin. 2. Trim the shape of the nails. 3. Use plastic tweezers to shape the side of the nail. 4. Clean the nails with a dust brush. 5. Apply a coat of 3-in-1 nail polish. 6. Cure under /LED light for 1-2 minutes. 7. Apply two coats of 3-in-1 nail polish. 8. Cure under /LED light for 1-2 minutes. 9. Done. packing list: 10 x Nail Pen