Gel Polish vs Regular Nail Polish — Wear, Ingredients & Nail Health

How do gel polishes differ from regular ones?

Although both products are used to colour the nails, they differ fundamentally in their chemical composition as well as in how they are applied and removed. Classic nail polish is a solution of polymers (mainly nitrocellulose), pigments and plasticisers in an organic solvent. It dries on its own as the solvent evaporates — usually within a few minutes. Gel polish (UV/LED gel polish) contains photoinitiators and acrylic or methacrylic monomers that polymerise (cure) only when exposed to UV or LED light. Without a lamp, the product does not set.

Polish ingredients — what to look out for?

Classic polishes — the question of "free" labels

The nail industry widely uses a labelling system that indicates the absence of specific substances considered potentially harmful:

• 3-free: without formaldehyde, DBP (dibutyl phosphate) and toluene
• 5-free: additionally without formaldehyde resin and camphor
• 7-free, 10-free: further excluded substances (TPHP, xylene, acetyl butane)

Formalin (formaldehyde) was historically used as a nail-plate hardener, but because of its sensitising and carcinogenic effect (IARC Group 1) its use is being restricted. In the EU, under Regulation 1223/2009, formaldehyde in nail polishes is permitted up to a concentration of 0.2% only as a preservative (Annex V). You can verify the full composition of polishes in the nail polish category.

Gel polishes — photoinitiators and contact allergens

The key components in gel polishes are:

• HEMA (2-hydroxyethyl methacrylate) and TEGDMA — monomers that are the main source of contact allergies. Sensitisation to HEMA and other methacrylates is a growing problem — the SCCS has highlighted the need to restrict HEMA in nail products
• Photoinitiators: TPO, benzophenone, BAPO — they initiate polymerisation under the UV/LED lamp
• Pigments and glitters — usually metal oxides and mica

Products labelled HEMA-free are an alternative for people with sensitive or allergy-prone skin. You can check ingredient details through the PurScore.pl INCI encyclopaedia. You will find a wide range in the gel polish category.

Wear time — how long will the polish last?

• Classic polish: 2–7 days, depending on quality, base coat and lifestyle
• Gel polish: 2–4 weeks with correct application and a lamp of suitable power

Gel polish lasts considerably longer, but proper nail preparation is crucial: degreasing, base coat, layer thickness and curing time under the lamp.

Impact on the nail plate — facts and myths

You often hear that gel polish ruins the nails. The truth is more nuanced:

• Gel polish itself, when applied and removed correctly, does not damage the nail plate any more than classic polish
• The greatest risk comes from mechanical peeling or overly aggressive removal with a file — this destroys the keratin layers
• Wearing it for too long (over 4–5 weeks) leads to lifting and damage to the nail plate
• Regular breaks between applications and the use of a nail conditioner help keep the nail plate in good condition

If your nails are weakened, it is worth reaching for conditioners containing biotin, panthenol, keratin hydrolyzate or peptides — their effects have been confirmed in dermatological studies.

Removing polish — the crucial step

Classic polish is removed with acetone or acetone-free remover within seconds. Gel polish requires soaking in acetone for 10–15 minutes (the foil or bowl method) and gently lifting off the softened mass with an orange wood stick. It should never be peeled off mechanically — this is the main cause of nail-plate damage.

Who do we recommend each polish to?

• Classic polish: for people with sensitive skin, methacrylate allergies, who paint their nails irregularly or who care about a minimalist formula
• Gel polish: for people looking for durability, who are professionally active or frequently immerse their hands in water — provided they remove it correctly

This article is for informational purposes only. In the case of allergies or pathological changes to the nail plate, consult a dermatologist or podiatrist.

Check the ingredients in your cosmetic →