What Causes Heat Spikes
A heat spike (sometimes called a heat burst) happens when the gel polish begins to cure and the chemical reaction generates heat. The UV/LED lamp itself is not directly heating the nail; the heat comes from the gel's polymerization process.
Common causes of stronger heat spikes include:
1. Thick Gel Application
The thicker the layer of gel, the more material cures at once, creating more heat.
- Thick builder gels and hard gels are more likely to cause heat spikes than thin gel polish layers.
- Applying multiple thin coats helps reduce the effect.
2. High-Power Lamps
Modern LED lamps (48W, 60W, 80W+, etc.) cure gels very quickly.
- Faster curing = faster chemical reaction = more heat generated in a short period.
- Many professional lamps have a Low Heat Mode (gradual power increase) specifically to reduce heat spikes. Our 48W Lola Lee Lamp has a low heat mode
3. Highly Reactive Gel Formulations
Some gel products are formulated to cure very quickly.
- Fast-curing gels can produce a more intense heat spike.
- Builder gels, sculpting gels, and some highly pigmented gels are common culprits.
4. Thin or Damaged Nails
Clients with:
- Thin natural nails
- Over-filed nails
- Recently removed enhancements
- Sensitive nail beds
will feel heat much more intensely because there is less natural insulation between the nail plate and the nerve endings.
5. Large Amount of Product on the Apex
When building structure on the nail, the apex area often contains the thickest amount of gel, making the heat spike more noticeable in that area.
How to Reduce Heat Spikes
- Use the lamp's low heat mode.
- Apply thinner layers and build gradually.
- Ask the client to briefly remove their hand if they feel excessive heat, then continue curing.
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Avoid over-filing the natural nail during preparation.