Caleb Foster
Getting your nails done shouldn't be painful, but anyone who's had a gel manicure will know that sometimes it can be. This is due to a phenomenon known as a 'heat spike', which is caused by an exothermic reaction during the curing process. Essentially, when the gel is cured under a UV or LED lamp, the photoinitiators in the gel are activated, triggering a rapid chain reaction that hardens the gel and releases heat. While a small amount of warming is normal, sometimes the heat is released all at once, resulting in a painful burning sensation. If you experience a heat spike during a manicure, it's important to make your technician aware so they can adjust the settings and minimise your discomfort.
How to treat heat spikes from gel nails
| Characteristics | Values |
|---|---|
| Cause | The heat spike is caused by an exothermic reaction during the polymerization process. This involves monomers and oligomers joining together to form cross-linked polymer chains, releasing heat as a byproduct. |
| Factors | The intensity and duration of the heat spike can vary due to factors such as nail bed thickness, gel layer thickness, and the type of nail lamp used. |
| Prevention | To prevent heat spikes, use a smaller amount of gel, apply it in layers, and use a lamp that is matched to the product. |
| Treatment | If a heat spike occurs, remove your hand from the lamp and push down on the top of the lamp with your fingertips to relieve the sensation. You can also try the “in/out method” by putting your nails in and out of the lamp quickly and repeatedly. |
| Nail bed thickness | Thicker nail beds with more keratin layers can absorb and distribute heat more effectively, resulting in less intense heat spikes. |
| Gel layer thickness | The thicker the gel layer, the more heat is generated. Using less gel or a thinner layer can help reduce heat spikes. |
| Nail lamp | Using a lamp with a low heat setting or a lamp that is matched to the product can help prevent heat spikes. |
| Sensitivity | Some people may be naturally more sensitive to heat spikes. If discomfort continues, seek medical advice to avoid potential nail injuries and infections. |
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What You'll Learn
Thinner nail beds and their impact on heat spikes
Thinner nail beds can be more susceptible to heat spikes, and this can have a significant impact on the overall nail health and manicure experience. Firstly, it is important to understand that the occurrence of heat spikes is due to the chemical reaction of polymerisation, which involves monomers and oligomers joining together to form a hard gel surface. This process releases heat, and when it occurs too rapidly, it results in a heat spike that can be felt at the nail bed.
Thin nail plates, whether naturally occurring or due to excessive gel use, can increase the likelihood of experiencing heat spikes. This is because a thinner nail bed has less of a buffer between the nail bed and the heat generated by the product. As a result, individuals with thinner nail beds may be more sensitive to the heat produced during the curing process.
To mitigate heat spikes for clients with thinner nail beds, nail technicians should apply ultra-thin gel layers, using less gel overall. By applying multiple thin layers, the gel cures more evenly and generates less heat, reducing the risk of heat spikes. Additionally, it is crucial to use a lamp that is specifically designed for the product being used. Using an incorrect lamp or curing method can cause the reaction to occur too quickly, leading to higher temperatures and potential nail damage.
Furthermore, certain gel products are more prone to causing heat spikes due to their chemical composition and viscosity. For example, Hydroxyethyl methacrylate (HEMA), a common ingredient in gel polishes, is known to cause heat spikes due to its vigorous exothermic reaction during curing. Therefore, opting for gel products that generate less heat, such as softer and more flexible gels, can be beneficial for those with thinner nail beds.
Overall, understanding the science behind heat spikes and the factors that influence their occurrence is crucial for nail technicians. By considering the condition of the nail plate, the thickness of the gel, and the ingredients of the gel polish, technicians can create a comfortable and enjoyable experience for clients with thinner nail beds while minimising the risk of nail damage.
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The role of nail plate filing in causing heat spikes
The nail plate, or nail bed, is the skin area beneath the nail plate that houses nerves and blood vessels. Its thickness is determined by the amount of keratin, the protein that forms nails. A thicker nail bed with more keratin layers can effectively absorb and distribute curing heat, reducing its direct impact on nerve endings and resulting in less intense heat spikes.
In contrast, when the nail plate is thin, it has fewer keratin layers to act as a buffer against heat. This allows the heat to stimulate the sensitive nerve endings more directly, leading to a more intense heat spike. Overly aggressive filing techniques can further thin the nail plate, weakening its heat-barrier function and allowing heat to flow into the nail bed.
Additionally, aggressive filing can cause friction burns on the nail bed, making it super-sensitive to even small amounts of heat that would normally go unnoticed. Friction burns can damage the nail bed, increase its sensitivity, and cause it to overreact to warm temperatures. This is why it is crucial to avoid over-filing the nail plate and to use gentle filing techniques to protect the nail plate from friction burns.
Furthermore, the thickness of the gel layer applied also plays a role in the occurrence and intensity of heat spikes. Applying thicker layers of gel can lead to fast-burning sensations and prolonged heat spikes. This is because the more thickly the nail coating product is applied, the more heat will be released. Therefore, applying thin coats or layers of gel and properly curing between each coat can help reduce and avoid heat buildup.
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Using the wrong nail lamp and its consequences
Using the wrong nail lamp can have several consequences, from discomfort to potential safety risks. Here are some of the issues that can arise:
Heat Spikes and Burns: One of the most common issues when using an incorrect nail lamp is heat spikes, which can cause a burning sensation on the nails. This occurs when the lamp cures the product too quickly, leading to an intense release of heat. This can result in serious burns to the nail bed, also known as the dermal layer beneath the nail plate. In some cases, the nail plate may even separate from the nail bed, a condition called onycholysis, which increases the risk of nail bed infections.
Under-Curing and Over-Curing: Using an incompatible lamp can lead to under-curing or over-curing of the gel nail product. Under-curing occurs when the gel is not fully cured, resulting in a sticky or soft texture. This can lead to lifting and peeling of the gel, increasing the risk of chipping and potential allergic reactions. Over-curing, on the other hand, occurs when the gel is cured too much, making it too brittle and potentially damaging the natural nail.
Inconsistent Results: Each gel polish brand has specific curing time recommendations, and using the wrong lamp can interfere with these timings. This can result in inconsistent curing, affecting the quality and longevity of the gel manicure. The gel may not adhere properly, leading to premature wear, chipping, or lifting.
UV Radiation Exposure: All nail lamps, whether UV or LED, emit ultraviolet radiation, primarily in the form of UVA. Exposure to UVA radiation is associated with an increased risk of skin cancer. While the level of exposure during a gel manicure is typically not high enough to significantly raise the risk, it is still a concern, especially for those who get regular manicures.
To avoid these issues, it is crucial to use a compatible lamp with the correct curing settings. Always follow the manufacturer's guidelines for curing times and utilize the low heat mode settings available on some lamps to minimize heat spikes and ensure the safety and comfort of your clients.
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The science behind heat spikes
Heat spikes are caused by an exothermic reaction, which is a chemical reaction that emits heat. This reaction occurs during the polymerisation process, when monomers and oligomers join together to form cross-linked polymer chains that make up the hard gel surface. This process is triggered by specific light wavelengths, which cause a rapid chain reaction that hardens or "cures" the gel, releasing heat. The total amount of heat generated is directly related to the number of bonds formed during the polymerisation reaction. Each bond formed will generate a specific amount of heat, so the more bonds that are formed, the more heat is produced.
The thickness of the nail bed and the gel layer applied to the nail also contribute to the intensity of heat spikes. Thicker nail beds have more keratin layers, which can effectively absorb and distribute the curing heat, reducing its direct impact on nerve endings and resulting in less intense heat spikes. In contrast, thinner nail beds have fewer keratin layers to act as a buffer, allowing heat to more directly stimulate the sensitive nerve endings and leading to a more intense heat spike. Similarly, the thicker the gel layer, the more gel molecules are available to bond, and the more heat is generated during curing. If the gel layer is too thick, the heat may not dissipate quickly enough, leading to a heat spike.
Additionally, incorrect product application and curing times can also cause heat spikes. For example, using the wrong nail lamp to cure UV gels can result in a mismatch between the intensity of energy released by the lamp and the initiators in the product, causing the reaction to occur too quickly and leading to a heat spike.
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How to treat heat spikes at home
Heat spikes are a common issue with gel nails, and they can be treated at home in several ways. Firstly, it is important to understand what causes heat spikes. During the curing process, an exothermic reaction occurs, which emits heat. This reaction happens when photoinitiators in gel polishes are exposed to specific light wavelengths, triggering a rapid chain reaction that hardens the gel. The thicker the gel layer, the more heat is generated, leading to a heat spike.
To treat heat spikes at home, you can try the following methods:
- Use less gel: Apply a thinner layer of gel, as a smaller amount of gel will generate less heat.
- Use a different lamp: Try using an LED lamp with a setting for hard gels, as these lamps have less output and will reduce the heat.
- Use a gel that generates less heat: Softer, more flexible gels often generate less heat due to the altered resins and photoinitiators.
- Use a lamp with a low heat setting: Some lamps have low heat settings, which emit UV radiation in smaller quantities, allowing for a slower cure without producing a heat spike.
- The "in/out method": If you experience a heat spike, quickly put your nails under the lamp, then pull them out, and repeat this process. This is a common workaround, but it may not address the root cause.
- Tap your nails: Try tapping your nails, as this is another workaround suggested by some.
- Flash curing: You can try flash curing, which involves partially curing the gel with short flashes of UV light before the final cure. However, this may not address the root cause.
It is important to note that while these methods can help reduce the intensity and frequency of heat spikes, they may not completely eliminate them. If you are experiencing severe or persistent heat spikes, it may be best to consult a professional nail technician or seek medical advice.
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Frequently asked questions
Heat spikes are short-lived, intense sensations of heat that can occur when gel nails are cured under a UV or LED lamp.
Heat spikes occur due to an exothermic reaction, which is a chemical reaction that emits heat. This happens when photoinitiators in gel polishes react to specific light wavelengths, triggering a rapid chain reaction that hardens the gel and releases heat.
To prevent heat spikes, use a lamp that is matched to your product and avoid applying a thick layer of gel, especially on thin or damaged nails. Use a smaller amount of gel and apply it in layers. Also, ensure you follow the manufacturer's instructions for curing times and settings.
If you experience a heat spike, immediately remove your hand from the lamp to avoid damaging the tissue under the nail plate. You can also try pushing your nails down on a hard surface to relieve the burning sensation before placing your hand back into the lamp.
The intensity of heat spikes can vary depending on factors such as nail bed thickness and gel layer thickness. Thinner nail beds have fewer keratin layers to buffer the heat, resulting in more intense heat spikes. Similarly, thicker gel layers generate more heat during curing, leading to more intense heat spikes.
