Gel Nail Polish:
The Complete Guide
Gel polish is a liquid of acrylate monomers and photoinitiators that hardens under UV or LED light. Choose the type for the job — soak-off color, builder gel, hard gel, polygel or rubber base — match it to your lamp, apply thin coats, cure fully, keep it off the skin, and remove it by soaking, not peeling.
By LuxeFormula Labs · Updated October 1, 2026 · 9 min read
How gel polish works
Regular polish dries as solvents evaporate. Gel works differently: it contains acrylate and methacrylate monomers and oligomers plus photoinitiators. When light of the right wavelength hits the photoinitiators, they start a chain reaction that links the molecules into a cross-linked film. That film is harder and more flexible than lacquer, which is why gel lasts longer — and why it has to be cured, not air-dried.
The six types of gel
| Type | What it is | Best for | Removal |
|---|---|---|---|
| Soak-off gel color | Thin, pigmented gel | Color manicures, 2–3 weeks | Acetone soak |
| Builder gel / BIAB | Thicker, self-leveling | Strength and short extensions | Soak or file, depending on formula |
| Hard gel | Thick, non-soak-off | Sculpted extensions | Filed off |
| Polygel | Acrylic-gel hybrid paste | Extensions without liquid monomer | Filed, partly soakable |
| Rubber base | Flexible, thick base | Smoothing and support under color | Soak or file |
| Top coat (wipe / no-wipe) | Clear sealing layer | Shine and protection | Removed with the set |
LED vs UV curing
LED and UV lamps emit different wavelengths, and photoinitiators are chosen to respond to them. LED lamps usually cure compatible gels in 30–60 seconds; UV lamps take longer. Match the gel to the lamp the brand recommends. An under-cured layer leaves residual monomer — the main cause of early lifting and a driver of skin sensitization.
How to apply gel polish
- Push back cuticles, lightly buff and remove dust.
- Dehydrate the nail plate so no oil is left.
- Apply a thin base coat, keeping it off the skin, and cure.
- Apply thin color coats, capping the free edge, and cure each one.
- Apply top coat and cure; wipe only if it's a wipe-off top coat.
- Clean any gel off the skin before curing — uncured gel on skin is what drives sensitization.
How to remove gel polish
File the shiny top coat to break the seal, soak with acetone using wraps or clips, then gently push the softened gel away. Never peel or pry gel off — it takes layers of the nail plate with it. Hard gel doesn't soak off and is filed instead.
Safety and regulation
- Allergy: acrylates such as HEMA are skin sensitizers. Most reactions come from uncured gel on the skin. HEMA-free gels reduce HEMA exposure; good technique matters with any formula.
- EU TPO ban: TPO, a common photoinitiator, has been prohibited in EU cosmetic products since 1 September 2025 (Regulation (EU) 2025/877).
- EU HEMA restriction: HEMA-containing nail products in the EU are for professional use, with the required label statements.
- Lamps: a 2023 Nature Communications study found UV nail dryer exposure damaged DNA in cultured cells — not a measured risk in people, but a reason many users protect their hands.
Gel Polish
Questions
Sources
- Commission Regulation (EU) 2025/877 — TPO prohibition
- Commission Regulation (EU) 2020/1682 — HEMA and Di-HEMA TMHDC in nail products
- Zhivagui et al., Nature Communications 2023 — UV nail dryer irradiation and DNA damage in cells
- FDA — Nail care products
General information, not medical or legal advice.