Easy Application: Rotate the cap on the penholder, slowly twist a few times, nail polish comes out immediately. Note: do not twist too fast, or you will screw out a lot of nail polish, start your nail art. 12 Colour Choices: 12 exquisite available now. Suitable for natural nails, UV gel nails, false nails, acrylic nails, nail tips, etc. Safe Non-Toxic: Our gel nail pens has no harm to the body and skin, with lower smell, Ideal for creating your own beautiful nail art design on finger or toe nails; Can be used on artificial nails as well as natural nails. Please Note: It need to be cured by UV/LED lamp available, using high quality materials, environmental no smell, bright color, high saturation, no cracking, long last for 10-15 days. This is a very simple pen, eliminating the tedious process, 3 to 1, modify your nails, you can used it anywhere and any occasion. More creative and funny. Practical Gel Nail Polish Pen: One step UV gel pen, don't need base/top coat anymore, one pen does it all,10 minutes quick manicure.