Isla Bennett
There are several reasons why gel nail polish changes colour. The phenomenon of colour change can be quite fascinating, and it can be frustrating, especially if you've only had the gel for a few days. The good news is that there are ways to prevent it. The change in colour can be attributed to factors such as exposure to UV light, temperature, and chemical reactions. Certain gel nail polishes are designed to change colour under certain conditions, such as thermal gels that change colour according to temperature. Overexposure to UV light can also cause discolouration, and this can happen if you spend a lot of time in the sun or use self-tanners. Additionally, chemical reactions from cosmetics or cleaning agents can also cause colour changes, and it's important to be mindful of the products you use and their potential impact on your nail polish.
Characteristics and their values regarding the change of colour in gel nail polish
| Characteristics | Values |
|---|---|
| Overexposure to UV light | The pigments in gel nail polish undergo a chemical reaction when exposed to UV light, causing a change in colour |
| Temperature variations | Thermochromic pigments in gel nail polish are sensitive to temperature changes, resulting in colour alteration |
| Chemical reactions | Cosmetics, cleaning agents, and highly acidic foods can cause chemical reactions that change the colour of gel nail polish |
| Incompatible brands | Using different brands of base coats and gel colours can cause the colour to change or lift |
| Improper application | Applying gel nail polish too thinly can lead to colour fading, while applying it too thickly can result in chipping and improper curing |
| Summer activities | Sun exposure and increased use of self-tanners during summer can contribute to discolouration of gel nail polish |
| Smoking | Similar to smoking causing teeth to turn yellow, the chemicals in cigarette smoke can discolour gel nail polish, especially on the dominant hand |
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What You'll Learn
Chemical reactions from cosmetics
Cosmetics, such as nail polishes, contain chemicals that can induce adverse chemical reactions. The specific chemicals used in nail polishes vary, and different types of nail polish can have varying effects on fingernails. Some common chemicals found in nail polishes include formaldehyde, toluene, dibutyl phthalate, formaldehyde resin, and camphor. These chemicals are associated with potential health risks, including allergic contact dermatitis and, in the case of formaldehyde, potential carcinogenic effects.
Additionally, nail polish removers, top coats, and treatments can be inhaled and absorbed through the skin and nails, leading to possible health concerns. While studies suggest that the exposure to toxins from nail polishes is generally low, frequent users and nail technicians may be at higher risk.
One notable issue with gel nail polishes is their potential to change colour, which can be attributed to various factors. Certain gel polishes are designed to change colour under specific conditions, such as temperature changes or exposure to UV light. Overexposure to UV light, whether from sunlight or artificial sources, can cause discolouration. Similarly, lifestyle factors like smoking can lead to nail discolouration, as the chemicals in cigarettes can affect the colour of the gel polish.
Furthermore, chemical reactions from cosmetics or cleaning agents can also cause colour changes in gel nail polishes. This was exemplified in an incident where a person's gel nail polish turned from lavender to pistachio green, suspected to be due to a chemical reaction from cosmetics or cleaning agents on the dominant hand. In another instance, the high acid content in certain foods, such as tamarind, was found to interact with gel nail paint, resulting in discolouration.
To address these concerns, some nail polish brands market themselves as being free from specific chemicals, such as "five-free," "7-free," or "10-free" polishes. However, even "`natural` or "`xxx-free'" products may still contain toxic chemicals, and the health benefits of these alternative polishes remain uncertain.
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Exposure to UV light
UV light interacts with the colour pigments in gel nail polish, and this interaction can cause the colours to appear different from their original shade. The exact nature of this colour change depends on the chemical structure of the pigments used in the polish. Some colours are more susceptible to UV-induced changes than others. For example, colours in the blue range of the colour spectrum tend to be more prone to fading or shifting when exposed to UV light, while colours on the red end are generally more resistant.
The intensity and duration of UV exposure also play a role in how gel nail colours may change over time. Prolonged exposure to UV light, either during the curing process or through natural sunlight, can lead to a greater degree of colour alteration. This is because the energy from UV light can break down the chemical bonds in the colour pigments, causing a permanent change in their structure and, consequently, their colour. This is a similar process to how newspaper turns yellow when left in sunlight or how clothing colours can fade over time.
To minimise potential colour changes in gel nail polishes, it is advisable to protect your nails from excessive sunlight exposure. Additionally, some gel nail polishes may be formulated with pigments that are more resistant to the effects of UV light, offering better colour stability. It is worth noting that there are also UV-free gel nail polish options available that do not require curing under a lamp and, therefore, eliminate the risk of colour alteration due to UV exposure.
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Incompatible brands of gel polish
Gel nail polishes are cured under UV or LED light to create a hardened layer that is more durable and long-lasting. However, this does not prevent gel nail colours from changing or fading.
One possible reason for this is the use of incompatible brands of gel polish and clear gel topcoats. Combining different brands of base and gel colour can cause issues with the final result, such as the colour lifting or peeling off.
To avoid this, it is recommended to use the same brand of base and gel colour. Additionally, proper application is crucial. Applying the gel polish too thinly can cause the colour to fade, while applying it too thickly can lead to lifting, chipping, or improper curing. It is also important to use the correct top coat and apply it evenly to provide adequate protection and prevent discolouration.
Furthermore, external factors can contribute to colour changes. Exposure to sunlight, self-tanners, or smoking can cause discolouration, especially on the dominant hand. The use of certain products, such as sunscreen, cleaning supplies, or ingredients in cooking, can also react with the gel polish, leading to unexpected colour changes.
In rare cases, the colour itself may have a defect, but this is uncommon. Proper application and handling can usually prevent fading. It is worth noting that certain gel nail polishes are designed to change colour under specific conditions, such as temperature changes or UV light exposure.
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Incorrect application
Incompatible brands of gel polish and clear gel topcoats may also not work well together. For example, using two different brands of base and gel colour can cause issues, as can using an old bottle of polish. It is recommended to use the right top coat for the system you are working with. For instance, if you are using the Shellac system, it is better to use Original Top Coat or Duraforce as they are thicker and offer more protection.
Gel nail polishes can also be contaminated with a different colour, so it is important to know how to clean a nail polish brush. Overexposure to UV light can also cause discolouration, so it is important to be mindful of how much time is spent in the sun or using self-tanners.
The manicure process can lead to dehydration and thinning of the nail plate, which can cause discolouration. When applied and removed correctly, gels are safe to wear on an ongoing basis.
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Exposure to certain foods
Another factor to consider is the potential contamination of the gel polish with a different colour. This can occur if the nail polish brush is not properly cleaned between uses. Furthermore, overexposure to UV light or sunlight can also cause discolouration, as the tan lines can vary from person to person. Similarly, the use of self-tanners or spending a significant amount of time in the sun can contribute to discolouration.
In some cases, the chemical composition of the gel nail polish may react with certain cosmetics or cleaning agents, leading to unexpected colour changes. It is advised to use cuticle oil daily to protect the nails from chemical exposure and to avoid applying sunscreen directly to the nails. Additionally, certain pigments used in cosmetics are more prone to fading, especially pink pigments, due to their chemical structure.
To prevent discolouration, it is recommended to use quality gel nail polish, apply it evenly, and ensure proper thickness to avoid fading or chipping. Applying a gel top coat regularly and moisturising the hands can also help maintain the colour and condition of the gel nail polish.
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Frequently asked questions
The gel nail polish may have reacted to the chemicals in cleaning supplies or cosmetics. It could also be due to overexposure to UV light, which causes the pigments in the nail polish to change their molecular structure and, consequently, their color.
It could be that you accidentally selected a mood-changing nail polish that alters color with a shift in temperature. It could also be due to overexposure to UV light, which your other hand was not exposed to.
To prevent fading, ensure proper application and handling. Avoid direct contact with intensely colored foods, cosmetics, and cleaning supplies. Also, be aware that gel nail colors may fade during the summer due to overexposure to UV light.
