Safety First: Upgraded formula is HEMA-free, TPO-free, cruelty-free, non-toxic, and low odor. The safe and healthy formula can give you peace of mind. | Nail Protection and Thcikening Trio Set: This three-piece set includes clear Builder Gel, durable base coat, and ultra-shine top coat. Strengthen your nails to stronger healthy nails, long lasting 28+ days. | Versatile Builder Nail Gel: The innovative builder gel can be used for multiple applications, including thickening nails, extending lengths of natural nails, shaping and attaching nail accessories, allowing you to create salon-looking nails at home. | Easy to Application: FZANEST BIAB is designed for everyone, whether you are a nail professional or an DIY versatile,FZANEST Brush on Builder in a Bottle(BIAB) has excellent self-levelling, and medium viscosity, very easy to use. | Reminder:Cure under UV/LED nail dryer lamp,CURE TIME: Average for LED light 30-60 secs,UV light 2-4mins.