NIC Nail Technician Written ExamNail Technology ProceduresEasy

A client presents with a new set of gel nail enhancements that feel hot and uncomfortable during the curing process under the UV lamp. What is the most likely cause of this sensation?

  1. AThe client has a rare allergy to the gel product.
  2. BThe gel layer applied was too thick, causing an exothermic reaction.
  3. CThe UV lamp is too old and not functioning correctly.
  4. DThe client's natural nails are dehydrated and sensitive.
Show answer & explanation

Correct answer: B. The gel layer applied was too thick, causing an exothermic reaction.

An exothermic reaction, or heat spike, is a common occurrence during gel curing, especially when thick layers are applied. This reaction releases heat, causing the burning sensation.

Why the other options are wrong

  • A. Allergies are possible but less likely to cause an immediate heat sensation during curing; they typically manifest as itching, redness, or swelling later.
  • C. An old or malfunctioning UV lamp would more likely result in under-cured gel or no curing at all, rather than excessive heat.
  • D. Dehydrated nails can be sensitive, but this condition doesn't directly cause a chemical exothermic reaction during gel curing.

Exothermic Reaction (Gel Curing)

The release of heat that occurs when gel products polymerize (cure) under UV or LED light. This reaction is intensified by thicker gel applications.

  • Caused by the chemical process of polymerization.
  • Thicker gel layers increase the heat generated.
  • Can cause a 'heat spike' or burning sensation for the client.

Memory trick: Thick Gel gets Hot Quick!

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