ROSALIND Warm Tips: Please remember to clean your hands and polish the nail surface before applying the all seasons gel nail polish. Dark colors(such as black) can appropriately extend the lighting time to 180 seconds. Please contact us directly if there are any problems. We guarantee a fast replacement or refund service!. Health & Safety Ingredients: ROSALIND gel nail polish is made of environment-friendly, non-toxic and low-odor raw materials. Will not harm your nails and health. It is a safe and beautiful gel manicure set, please feel free to apply. Easy Apply & Care: Neutral gel nail polish only need to work with the gel base top coat nail polish to get a perfect nail art. First, apply the base coat, then coated with color gel, and finally coated with gel top coat. Each step of the operation requires UV/LED lamp curing for 120 seconds. 30 Days Not Warping & Bubbles Free: Each bottle of white nude gel polish with a very soft and smooth brush that help the gel polish adhere the nail surface stronger. As the correct step to avoid warping, shedding or blistering, keep your nails shiny for up to 4 weeks. White Black Gel Nail Polish: ROSALIND have followed the gel color trend of 2022 with a selection of 6 popular all season gel polish set. Black and white collocation is not easy to go wrong in any situation and is ideal as a basic color for DIY gel nail art, while the nude brown plays a good role in nail art creation. All in one set for your gel nail design.