Ava Monroe
Gel nail polish is cured under UV light, which can sometimes cause a burning sensation. This is due to the energy from the UV light being converted into heat as it interacts with the gel molecules. The thicker the gel application, the more molecules are available to bond and generate heat. While some nail technicians claim that burning means the gel is too thick, others argue that a warm feeling is normal, and it is a quick price to pay for beauty.
| Characteristics | Values |
|---|---|
| Reason for burning sensation | The burning sensation is caused by the UV light stimulating the microscopic particles that make up the gel to move around and link, generating heat. |
| Gel application | A thicker gel application can lead to more heat generation during curing. Applying the gel in thinner layers can minimize discomfort. |
| Curing time | Over-curing can cause burning. UV curing should not take more than 2 minutes. |
| Lamp type | LED lamps are considered "stronger" than UV lamps and may require shorter curing times to avoid burning. |
| Nail thickness | Thinner nails may experience burning more intensely due to less insulation against the heat. |
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What You'll Learn
Gel application thickness
The curing time for gel polish depends on the nail lamp and the type of gel polish used. The wattage of a nail lamp is the most direct and influential factor. Higher wattage results in shorter curing times, but an excessively high wattage can cause a burning sensation. The number of beads in the lamp is also important, as the more beads there are, the shorter the curing time. The distance between the nail and the lamp bulb is a factor, too. The closer the nail is to the bulb, the higher the intensity of the light, and the shorter the curing time. However, placing the nail too close can lead to over-curing or a burning sensation.
The thickness of the gel application is critical. The thicker the application, the more gel molecules are available to bond, and the more heat that will be generated during curing. Applying the gel in thinner layers means fewer molecules will bond, resulting in less heat generation. A thick coat can cause over-curing (heat spikes) and under-curing, and the UV light cannot penetrate deep enough to cure the lower part of the coating. Therefore, it is recommended to apply thin coats of gel polish.
Different gel polishes have varying curing times. The following are some recommended curing times for different types of gel polishes:
- Bonding agent and anti-lifting solution: Allow to air dry naturally; no lamp curing needed.
- Base coat: 60 seconds.
- Strengthening gel: 60 seconds.
- Top coats: 120 seconds.
- Building gels, leveling gels, colour-painting gels, gradient gels, UV elongation shaping, and paperless extension gels: 60 seconds.
- Hand-painting: About 10 seconds for patterns and lines, and 60 seconds for larger areas.
- Adhesive for gem setting: About 120 seconds.
Gelled nails should not be left under the UV light for longer than two minutes. If the gel is not cured after this time, the lamp is too weak or the bulbs need to be changed.
It is important to note that a warm/hot feeling is normal, but you should not be in pain. If you experience discomfort, consider reducing the exposure time.
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UV light curing time
The curing time for gel polish depends on the nail lamp and the type of gel polish used. The wattage of a nail lamp is the most direct and influential factor. The higher the wattage, the shorter the curing time. However, excessively high wattage might cause a burning sensation for some people. The number of beads in a nail lamp is also a factor that influences curing time. The more beads there are, the shorter the curing time. The distance between the nail and the nail lamp bulb is another factor that influences the curing time. The closer the nail is to the bead, the higher the intensity of the light, resulting in a shorter curing time.
UV nail lamps produce 365nm ultraviolet rays, while LED nail lamps emit 365-405nm visible light. UV & LED lamps can produce both 365nm and 405nm wavelengths. The curing time a lamp takes also depends on the type of gel polish being used. For instance, UV nail lamps are most efficient and quickest for UV gel polishes, while LED lamps are fastest for LED gel polishes.
The curing time for gel polish can vary depending on the brand. Generally, the curing time for a base coat is around 60 seconds. For hand-painting, patterns, and lines, curing times can range from 10 to 60 seconds. Larger areas of hand-painting may require thin, multiple applications. The adhesive for gem setting requires about 120 seconds of curing, while small gems can use a strengthening gel with a curing time of 60 seconds.
It is important to note that curing times can vary, and it is recommended to follow the manufacturer's directions for the best results. Over-curing gel polish can lead to a burning sensation. Additionally, the thickness of the gel application can impact the curing time and the amount of heat generated. Applying the gel in thinner layers can help minimize discomfort.
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LED vs UV lamps
LED and UV lamps are used to cure gel nail polish. The difference lies in the type of bulbs inside the unit and the kind of light they emit.
LED Lamps
LED lamps are typically more expensive than UV lamps. They also tend to last longer and can cure gel polish faster than UV lamps. LED lamps emit very minimal amounts of UV rays, making them safe for use on nails. They have a longer, more visible wavelength on the light spectrum that specifically targets photoinitiators, which are molecules within the gel that release free radicals. These radicals can harden faster and more effectively under LED light than UV light. The curing time for LED lamps is usually around 30 seconds to 1 minute, while it can also flash cure a nail art design in just 15 to 30 seconds. The bulbs in LED lamps last for a much longer time, ranging from 5,000 to 10,000 hours, and up to 50,000 hours for some lamps.
UV Lamps
UV lamps are generally more affordable than LED lamps, but they may require bulb replacements. UV lamps emit UV light, which has raised concerns about the long-term effects of UV exposure, specifically related to the risk of developing skin cancer. However, the infrequent use of UV lamps for manicures (typically once or twice a month) is considered safe and carries little to no risk to the skin. The curing time for UV lamps is usually around 2 minutes. The bulbs in UV lamps last for approximately 4,000 hours, which typically means they need to be replaced every 6 months.
Both LED and UV lamps are effective in curing gel nail polish and achieving a flawless and long-lasting manicure. The choice between the two depends on personal preference, budget, and the products being used. LED lamps offer faster curing times, longer-lasting bulbs, and minimal UV exposure, but they may be more expensive. On the other hand, UV lamps are more affordable, but they may require bulb replacements and have slightly longer curing times.
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Microscopic gel particles
The burning sensation experienced during gel nail applications is caused by the interaction of the gel particles with UV light. The UV light stimulates the microscopic gel particles to move around and link together. The thicker the gel application, the more molecules are available to bond, resulting in increased heat generation. This heat is what causes the burning sensation.
To minimise discomfort, nail technicians can apply the gel in thinner layers, reducing the number of molecules bonding and decreasing the amount of heat generated. Additionally, the curing process should be carefully timed. While UV curing should not exceed two minutes, over-curing can occur if the gel is left under the light for an extended period, increasing the likelihood of burning.
The energy imparted by the UV light into the gel particles generates heat. This heat energy is responsible for the burning sensation experienced during the curing process. It is similar to the concept of a microwave, where the energy input increases the temperature of the material being exposed.
The burning sensation during gel nail applications is not considered normal and could indicate that the gel is too thick. Properly applied gel nails should not burn at all. However, some individuals may have different levels of sensitivity, and thin nails can also contribute to experiencing higher levels of discomfort as there is less insulation against the heat.
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Nail technician expertise
As a nail technician, it is important to understand the science behind the products and treatments you are offering. UV gel nails are a popular choice for clients, but it is essential to be aware of the potential for discomfort or even burning during the curing process.
The burning sensation experienced by some clients during UV gel nail treatments is caused by the interaction between the UV light and the gel molecules. The UV light stimulates the microscopic gel particles to move around and link, generating heat in the process. This heat can cause a burning sensation, particularly if the gel application is too thick. Thicker applications provide more gel molecules to bond, resulting in increased heat generation.
To minimise client discomfort and ensure a positive experience, nail technicians should apply the gel in thin layers. By reducing the number of molecules bonding, thinner applications can decrease the amount of heat generated. Additionally, it is crucial to monitor the curing time and ensure it does not exceed the recommended duration. UV curing should generally not take longer than two minutes. Over-curing can lead to excessive heat and increase the risk of burning.
While a warm feeling during the curing process is normal, pain or burning is not acceptable. If a client experiences discomfort, it may indicate that the gel application is too thick or that the curing process is taking too long. In such cases, technicians should adjust their techniques accordingly and prioritise the client's comfort.
Furthermore, it is important to be mindful of individual variations, such as thin nails, which can make clients more susceptible to experiencing burning sensations. In such cases, technicians might suggest using LED lamps, as they are considered gentler than UV lamps, or recommend alternative treatments that better suit the client's nail condition.
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Frequently asked questions
The burning sensation is caused by the UV light stimulating the tiny particles that make up the gel. The thicker the gel application, the more molecules there are to bond, and the more heat is generated during curing. A warm feeling is normal, but you shouldn't be in pain.
Applying the gel in thinner layers will reduce the number of molecules bonding and, therefore, reduce the heat generated. You can also ask your nail technician to use a UV lamp instead of an LED one, as the latter is considered "stronger".
UV curing should take no longer than 2 minutes. If your nails are still not cured after this time, the lamp is likely too weak.
