BIAB back-to-office 3 Sep. Reinforced gel 1h application, 4-week wear (vs 3 weeks gel polish), zero lift. €60. September colours: nude, plum, bordeaux. No touch-up until 1 Oct.

1. BIAB vs gel polish: the numerical difference
BIAB = Builder In A Bottle, reinforced bottled gel (brush application like gel polish, but thicker + structuring formula). Key differences vs classic gel polish: 4-week wear vs 3 weeks (+33% duration), zero peeling (no lift at free edge), reinforces natural nail (protective sheathing effect), ideal fragile or brittle nails. Price: €60 vs €45 (+33% rate too — logical).

2. BIAB 1h salon protocol
Our protocol: (1) filing almond, square or oval shape 5 min, (2) cuticles push-back + old removal 10 min, (3) preparation (surface dehydration) 5 min, (4) 1 BIAB layer structuring + UV cure 10 min, (5) 2nd layer reinforced if needed 10 min, (6) OPI colour of choice + glossy top coat 15 min, (7) moisturising hand massage 5 min. Total 1h, €60.

3. September colours compatible BIAB
All OPI colours compatible BIAB. For September, recommendations: enhanced nude (Suzi Loves Cowboys nude variation) — discreet strict office, plum (Lincoln Park After Dark) — transition, bordeaux (Got the Blues for Red) — autumn signature. For full view of 6 leading September shades, see our complete guide (Sat 5).

4. Back-to-school appointment: this week slot
For this first back-to-school week, ideal slot Thu 3 Sep or Fri 4 Sep at end of day 6-7:30pm. 1h application, you leave before 8pm salon closing. Wear calculation: 3 Sep application = next appointment 1 Oct (4 weeks exactly, month pivot). See our back-to-school day J ritual (1 Sep) for 45-min express version if you want something faster.
Frequently Asked Questions
BIAB = Builder In A Bottle, reinforced gel. 4-week wear (vs 3 weeks gel polish), zero lift, natural nail reinforced. More expensive: €60 vs €45.
Yes, it's actually the ideal application for fragile or brittle nails. Protective sheathing effect without artificial capsule.
Enhanced nude, plum, bordeaux. All OPI colours compatible. See complete 6-shade September guide (5/9).