If you're doing gel polish at home, you're already 90% of the way there. BIAB uses the same lamp, the same gel colors on top, the same removal process — the only difference is what goes on before the color. And that difference changes everything.
If you want the full foundation before making the switch, start with our Ultimate Guide to Builder Gel. And if you're still deciding between systems more broadly, our breakdown of builder gel vs. acrylic can help clarify where BIAB fits.
- Thin base, no reinforcement
- Chips around 1–2 weeks
- Full removal every time
- Nails stay the same
- Strengthening layer under your color
- Lasts 3–4+ weeks
- Infill instead of full removal
- Nails actually grow and strengthen
Keep your existing kit
Your lamp, your gel colors, your top coat, your removal supplies — all of it stays. You're just swapping your base coat for BIAB. That's the whole switch.
Add primer to your prep
BIAB is thicker and sits on the nail longer, so it needs a proper anchor. Dehydrator + thin layer of primer before application is what separates a set that lifts in a week from one that lasts a month.
Apply like a base coat — but don't flatten it
Medium bead, spread side to side, stay 1mm clear of the cuticle, seal the free edge. Use a gentle pressing motion rather than dragging. Cure one nail at a time on low-heat mode.
Apply your gel color on top as normal
Nothing changes here. Your existing gel polish colors go right over cured BIAB exactly as they always have. Or skip color entirely — BIAB worn alone is a whole look.
Infill, don't remove
Every 2–3 weeks, blend fresh BIAB into the regrowth area instead of starting over. Fewer full removals means less acetone, less thinning, and nails that genuinely get stronger the longer you wear it.
The best way to start: Pick one shade, do one set, and see the difference yourself. Most people never go back to regular gel polish after the first try.
Your nail routine's glow-up starts here.
Same kit, stronger nails, longer wear. One bottle is all it takes.
