No HEMA Builder Gel For Nails:FZANEST Builder Gel In A Bottle(BIAB),Upgrade formulas to HEMA-Free. More Health and Safety. | Versatile FZANEST Builder Gel:It's perfect for creating nail extensions,overlays,strengthen natural nails and durability of nail art, especially the thin, brittle, soft, damaged nails, enhancing and growth out the natural nail. | 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. | SAFE & HEALTHY: 13 toxin free ingredient makes it a healthy nail gel with low odor, safe for your nails. No harsh ingredients or adhesives that lead to damaged nails. | Reminder:Cure under UV/LED nail dryer lamp,CURE TIME: Average for LED light 30-60 secs,UV light 2-4mins.