Builder Gel also known as BIAB is a range of soak off gel builders ideal for creating strong overlays and which acts as a strengthening barrier for natural nails. BIAB nails are popular due to their versatility and durability. BIAB builder gel is a versatile product that strengthens natural nails and serves as a durable overlay. While BIAB comes in neutral tones, you can add a gel pol... https://www.nbar.com/builder-gel/