BIAB (Builder In A Bottle) is a self-leveling soak-off gel polish that thickens to overlay strength. It reinforces natural nails or builds short extensions and lasts 3–4 weeks without lifting when applied over a properly prepped nail bed.
Yes. Lavis Builder Gel BIAB is formulated HEMA-free and TPO-free — safe for sensitive clients and pregnant nail techs. Each bottle includes the CA Prop 65 disclosure and EIN-verified manufacturer batch number on label.
With proper prep (dehydrate, primer, thin base coat) and 60-second cure under a 48W+ LED lamp, Lavis BIAB delivers 3–4 weeks of chip-free wear — longer than standard gel polish because the thicker layer absorbs daily flex.
Yes. Apply BIAB over a sculpting form or tip to add 3–5mm length. BIAB extensions are lighter and more flexible than hard gel or acrylic, ideal for short-to-medium length. For longer extensions (8mm+), use a combo of BIAB + hard gel for strength.
BIAB is soak-off (removable in 15 minutes with acetone) and self-leveling — beginner-friendly. Hard gel is non-soak-off (must be filed off) and stronger for very long extensions. BIAB is preferred for overlays and short extensions; hard gel for advanced sculpting.
Lavis BIAB cures fully under any 48W+ UV/LED lamp in 60 seconds for color and 90 seconds for thicker overlay layers. Lower-watt lamps (24W) need 120+ seconds and may leave a soft layer.