3 in 1 Nail Glue Pen Free Back Cover Glue Solid Color Glue Nail Art Glue 3ML feature: Use stage: first form nail surface, apply primer, place under UV/LED lamp, apply first color paint, place under UV/LED lamp, apply second color paint, place under UV/LED lamp, apply The top coat is placed under UV/LED lights and finished (please note that this package does not include primer or top coat). Gel nail polish suitable for UV or LED light: Please note that the nail polish pen should be exposed to LED/UV light; the average is 60-120 seconds for LED light and 5-10 minutes for UV light. Wide range of applications: Our UV/LED lamp nail polish pencils are widely used in nail salons or personal nail art. They are suitable for fingernails, toenails, natural or fake nails, acrylic nails and making your own nails. Bright colors are easy to match with your daily outfits and make you look more attractive. Wide range of applications: Our three-in-one UV/LED lamp nail polish pencils are widely used in nail salons or personal manicures. They are suitable for fingernails, toenails, natural or fake nails, acrylic nails and making your own nails. Bright colors are easy to match with your daily outfits and make you look more attractive. Capacity and material: This nail polish gel pen is made of resin and formula; they can be applied to your nails safely and reliably. Each nail pen is 5.12 inches long and comes with a 0.45-inch brush with a capacity of approximately 0.12 ounces (3 ml); it is suitable for different types of nails. Package contains 1X Nail Gel Pen