Does BIAB damage natural nails?

No, quite the opposite. BIAB (Builder In A Bottle) is a flexible gel applied in a very thin layer directly on the natural nail after gentle prep, without tips or harsh products. It protects the nail during regrowth and limits free-edge breakage. Removal is done by gentle warm-acetone soaking (15-20 min), without abusive filing. At You Rêve Paris (7 rue d'Argenteuil, Paris 1st), Xin, BIAB and Russian manicure specialist, applies the gel by brush for a thin, natural finish.

How long does a BIAB application last?

A BIAB application typically lasts 3 to 4 weeks before infill. An infill (rebase + fresh thin layer) is recommended at 3 weeks: it covers the regrowth, refreshes the OPI semi-permanent colour on top and extends wear time. Allow 60 min on site at You Rêve Paris for a gel overlay + semi-permanent (€60), or 50 min for gel overlay only (€50). Ideal for soft, fragile or bitten nails.

Can I apply OPI semi-permanent over BIAB?

Yes — BIAB serves as a strengthening base and you can apply any OPI semi-permanent shade on top. That's actually the most common use case: gel overlay + OPI colour = €60 at You Rêve Paris, 60 min on site. You can also add nail art (french, chrome +€10, gradient +€10, baby boomer +€15) because the BIAB base offers a smooth solid surface that holds pigments and decorations perfectly.

Natural Gel Extensions: BIAB & Builder Gel

BIAB (Builder In A Bottle) is a flexible builder gel applied on the natural nail to reinforce it. Thinner and gentler than tips: gel overlay €60, resin overlay €55 at You Rêve Paris. Ideal for soft, brittle or bitten nails.

BIAB natural gel nail extensions at You Rêve Paris — fine, natural-looking — BIAB natural gel extension: hand-sculpted length for a result that blends seamlessly with the natural nail.

What is natural gel (BIAB)?

BIAB (Builder In A Bottle) is a flexible, light builder gel applied directly on the natural nail to reinforce it. Unlike tips, BIAB is hand-sculpted at the brush — the result is more natural, thinner and kinder to the nail.