Gel polish is a thin polish cured under an LED lamp: it gives colour, without chipping, for 3 to 4 weeks. A BIAB overlay is a flexible builder gel applied to the natural nail: it gives strength, without adding length, for 3 to 4 weeks too. Healthy, strong nails: gel polish (from €30, €45 with a manicure). Soft, brittle, peeling or bitten nails: BIAB (€60 with colour built in, €70 with gel polish on top). Either way, removal is done at the salon, never peeled off. You Rêve Paris, 7 rue d'Argenteuil, Paris 1st: book online.
1. Two products, two jobs: colour or strength
Gel polish (called semi-permanent in France) is applied like a polish, in thin coats, and cured under an LED lamp. We use OPI GelColor, a professional range. Its job: colour and shine, without chipping, for 3 to 4 weeks. It is a thin layer: it dresses the nail, it does not build it. On a healthy, strong nail, that is all you need. Everything about the application, wear and aftercare is in our gel polish guide.
A BIAB overlay (Builder In A Bottle) is a semi-transparent, flexible, self-levelling builder gel, brushed directly onto the natural nail. It creates a shell that follows the curve of the nail and absorbs everyday knocks, without lengthening it. Its job: strength. It is worn with the colour built into the gel, or under OPI gel polish. You may also hear gainage (the French word), kapping or builder gel: the treatment is called “Gel reinforcement / BIAB Kapping” on our menu, and our article BIAB vs builder gel covers the technical nuances.
💡 “Reinforced gel polish”, “gel polish with or without an overlay”? You may come across these words when comparing the two. At You Rêve, the reinforced version of gel polish has a simple name: the BIAB overlay + gel polish, builder gel underneath, OPI colour on top.
2. The comparison, point by point
| Gel polish | BIAB overlay | |
|---|---|---|
| Job | Colour, without chipping | Strengthening the natural nail, without adding length |
| Which nails | Healthy, strong, at a length you like | Soft, brittle, peeling, bitten, or weakened by a bad removal |
| Wear | 3 to 4 weeks | 3 to 4 weeks |
| Price | On its own €30 (30 min) · with a classic manicure €45 (45 min) | Colour built in €60 (60 min) · + gel polish €70 (75 min) |
| Quieter weekday slots | €25 · €40 | €55 · €65 |
| Salon removal | €10 (€5 if new gel polish follows) | €20 (€10 if a new overlay follows) |
| Nail art | Possible on either, from €10 per option | |
The key point: wear is the same. What changes is what sits under the colour. Gel polish on a soft nail goes with the nail when it bends or breaks; an overlay protects the nail itself while it grows. BIAB also takes longer at the salon and costs more. Still weighing up regular polish? Our guide to classic polish, gel polish or gel compares all three.
3. Choose gel polish if…
- Your nails are healthy: they do not bend or peel, and they hold the length you like.
- You mostly want colour, and a new shade at every appointment, every 3 to 4 weeks.
- You are short on time: gel polish on its own takes 30 min, a classic manicure + gel polish 45 min.
- You want the same on your toes: gel polish can also go on toenails (€30 on its own).
For a longer treat, the Luxury SPA manicure + gel polish (€65, 60 min) adds a soak, a scrub, a mask and a hand massage. Every option is on our manicure page.
4. Choose BIAB if…
- Your nails are soft or brittle: the gel strengthens and protects them while healthier nail grows through. Causes and good habits are in our article on brittle, soft or peeling nails.
- Your gel polish never makes it to the end because the nail breaks before the 3 to 4 weeks are up.
- You bite your nails: the shell creates a barrier that protects the nail while it grows back, and restores a shape.
- You are recovering from a bad removal: BIAB rebuilds a smooth surface while the nail recovers. See damaged nails after gel polish or gel.
- You want to keep your natural nails, just stronger, without false nails.
Two options: the BIAB overlay with colour built in (€60, 60 min), one step to strengthen and colour, or the BIAB overlay + gel polish (€70, 75 min) to pick your shade from the whole OPI range. BIAB adds no length: for that you need gel extensions. It is all on our BIAB overlay and extensions page.
5. Switching from one to the other, and upkeep
From gel polish to BIAB: add gel polish removal (€10, 15 min) to your BIAB booking. From BIAB to gel polish: removing the overlay costs €20 (20 min). If you stick with the same treatment, removal drops to €5 before new gel polish, and to €10 before a new overlay, in the same booking.
The rule for both: removal is done at the salon, never peeled off. It is not the product that damages the nail, it is peeling: gel polish or an overlay pulled off by hand takes the top layers of the nail with it. Why you should never do it at home: our article on gel polish removal.
The rhythm: every 3 to 4 weeks in both cases. For BIAB, that means an infill, or a removal and a new overlay, at the salon. In between, wear gloves for the washing-up and cleaning, and do not use your nails as tools.
6. Visiting Paris? What you need to know
- Where: 7 rue d'Argenteuil, Paris 1st — three minutes from the Louvre and the Tuileries, metro Tuileries (line 1) or Pyramides (lines 7 and 14).
- When: open 7 days a week, 10am to 8pm, Sundays included.
- How:online booking in English, French or Chinese, instant confirmation. Walk-ins are welcome, subject to same-day availability — calling ahead is the safest.
- Language: the whole team speaks French, English and 中文.
Book your gel polish or BIAB overlay
Classic manicure + gel polish €45 (45 min) · BIAB overlay with colour built in €60 (60 min) · BIAB overlay + gel polish €70 (75 min). Removal at the salon, never peeled off. Paris 1st, three minutes from the Louvre, 7 days a week.
Book onlineFrequently Asked Questions
Gel polish is a polish: a thin layer, cured under an LED lamp, that gives colour and shine without chipping. A BIAB overlay (Builder In A Bottle) is a flexible builder gel brushed onto the natural nail: it forms a shell that strengthens the nail without lengthening it, with the colour built into the gel or gel polish on top. Gel polish colours, BIAB strengthens.
At the salon we quote the same wear for both: 3 to 4 weeks. The difference is not how long it lasts but how strong the nail is: on a soft or brittle nail, the overlay protects the nail itself, whereas gel polish goes with the nail when it breaks.
Neither damages the nail, as long as both application and removal are done at the salon. What damages the nail is peeling: gel polish or an overlay pulled off by hand takes the top layers of the nail with it. At the salon, removal is gentle and nothing is ever pulled off.
Yes, it is one of the treatments on our menu: the BIAB overlay + gel polish (€70, 75 min), strength underneath and OPI colour on top. Without gel polish, the BIAB overlay with colour built into the gel costs €60 (60 min).
Gel polish: €30 on its own (30 min), €45 with a classic manicure (45 min). BIAB overlay: €60 with colour built in (60 min), €70 with gel polish on top (75 min). In quieter weekday slots: €25, €40, €55 and €65.
Add gel polish removal (€10, 15 min) to your BIAB booking: it is done at the salon, gently, just before the overlay. And if you later go back to gel polish, removing the overlay costs €20.
No: it strengthens the nail at its natural length. For extra length you need gel extensions (tips, Gel-X or sculpted forms, from €65), described on our overlay and extensions page.