LAVIS Builder Gel In The Bottle - B21 - Gel Polish 15ml
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LAVIS Builder Gel in the Bottle B21, a builder gel in a bottle with a built-in brush, for overlays on natural nails. Like every LAVIS builder line, it is HEMA-free.
What you get
- 1 x LAVIS Builder Gel in the Bottle B21, 15 ml
Why techs stock it
- Comfortable cure: formulated to keep the heat spike low.
- Long lasting: up to 4 weeks of wear.
- HEMA-free: part of the LAVIS HEMA-free builder lines.
- Brush in the bottle: apply it like a gel polish.
Specifications
| Brand | LAVIS |
|---|---|
| Line | Builder Gel in the Bottle |
| Shade | B21 |
| Size | 15 ml |
| Formula | HEMA-free |
| Wear | Up to 4 weeks |
| Cure | UV or LED lamp |
| SKU | LAVISBGB21 |
How to use it
- Prep: cuticle work, then file and buff.
- Clean: remove dust, wipe with acetone and dehydrate until matte.
- Primer: use LAVIS Protein Bond & Primer, the 2-in-1 step that saves time.
- Base: a thin coat of LAVIS Gel Base, then cure.
- First pass: a light, thin builder coat, cured.
- Structure: add a thicker layer for strength at the stress point and cure.
- File: shape the surface and remove the dust.
- Finish: optional color coats, then LAVIS Diamond Top Coat and cure.
Who it suits
- Clients who want their own nails, only stronger.
- Clients with sensitivities who ask for HEMA-free products.
- Busy salons that want a fast overlay service.
Which option to choose
Nearby shades in this line: B19, B20, B22. For a thicker, more forgiving bottle, look at Ver2; for HEMA-free and TPO-free, the B1 and B2 BIAB lines. All lines are on the LAVIS builder gel page.
Storing it
Store it in a cool, dark place and close it right after use. Screen color can differ from the real product, so check a swatch when an exact match matters.
More to pair with it: LAVIS builder gels, LAVIS Protein Bond & Primer and LAVIS Gel Base.
Frequently Asked Questions
Do I need a lamp?+
Yes. It cures under a UV or LED lamp. LAVIS builder gels are made for a low heat spike, but cure in stages on thick layers.
Is it HEMA-free?+
Yes. LAVIS makes its builder gel lines without HEMA. Read the label if a client has known sensitivities.
How long does it last?+
Up to 4 weeks with proper prep and application.
Do I apply color before or after the builder?+
After. Builder goes over the base, then you shape it, and color goes on top before the top coat.

