Describe Colors:transparent Size:12.7*2*2cm/net12.5*1.8*1.8cm net weight:3ml Shelf life:3 years Product functions and features include: 1.Promote nail growth: Nail growth serum pen is rich in nutrients, which can effectively promote nail growth and improve nail texture. 2.Strengthens nails: The nutrients in the formula nourish nails, strengthen them, and reduce the risk of nails being brittled and cracked. 3.Hydration: Essence pens often contain moisturizing ingredients that moisturize the nails and the skin around them, preventing dryness and peeling. 4.Convenient and easy to use: The unique design of the nail growth serum pen and the pen-shaped design are easy to apply, easy to use, and can be treated anytime, anywhere. 5.Improves nail shine: After a period of use, the nail growth serum can improve the shine of nails, making them look healthier and brighter. How to Use: Make sure your hands are clean before use. Open the nail growth serum pen and rotate the refill as needed to apply the serum to the of the nail and to the skin around the nail. Gently massage the nails and surrounding skin to help the essence be absorbed. It's best to use it before bedtime to get the most out of your nail growth serum. Better results can be obtained with continued use, following the frequency and method recommended in the product leaflet.