High Quality & Long Lasting: Formulated with high-quality upgraded chemicals, this Acrylic Powder can ensure color clarity and prevent yellowing or dulling. Generally, it can last for about 2-3 weeks even without nail lamp curing. Easy to Apply: It is super easy to be applied and suitable for beginners and professional. It doesn't need a nail lamp to cure, which can avoid turning skin black and damaging skin from a nail lamp. Safety Ingredients: All of our products are in strict production compliance with SGS and MSDS standards which are free of harmful chemicals.