Ava Monroe
Gel nail polishes are created using a variety of ingredients, including oligomers, polymers, and methacrylates. The main ingredient in gel nails is hydroxyethyl methacrylate (HEMA), a compound that gives gel polishes their chip-resistant and long-lasting qualities. This ingredient is often used in combination with di-HEMA trimethyl-hexyl dicarbamate, which functions as a cross-linker between polymer chains. The chemistry of gel nail polishes results in a product that hardens quickly, is long-lasting, and has a glossy finish. The application of gel nail polish involves curing the polish with a special lamp, which causes the gel to harden and creates a durable manicure.
| Characteristics | Values |
|---|---|
| Main Ingredient | Oligomer |
| Other Ingredients | Acrylates, Urethane, Acrylate, Urethane Acrylate, Urethane Methacrylate, Hydroxyethyl methacrylate (HEMA), Di-HEMA trimethyl-hexyl dicarbamate, Methacrylates, Monomer Liquids |
| Types | Bonding Gels, Building Gels, Self-Levelling Gels, Pigmented Gels, Gel Polish, Glossing Gel, Hard Gel, Soft Gel |
| Application | Applied in layers over the natural nail, nail tip, or form |
| Removal | Soaking, Filing, Wiping |
| Curing | Cured using UV or LED light |
| Safety | Potential skin irritants and sensitisers, can cause serious allergies over time |
| Storage | Store in a dark, cool place, away from sunlight and UV light |
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What You'll Learn
Acrylates
ACD presents in a variety of ways, including hand eczema, nail changes, paraesthesia, and airborne dermatitis caused by nail dust. In one reported case, a manicurist experienced an airborne reaction to nail sanding dust. In another, a woman experienced paraesthesia and nail dystrophy secondary to acrylic nails.
If you are concerned about a potential allergy to acrylates, it is recommended that you get a dermatological patch test to determine your sensitivity.
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Methacrylates
In the context of nail services, methacrylates are essential for achieving safe and effective nail enhancements. They offer better durability and are generally considered ""safer" in terms of allergic potential compared to acrylates. Acrylates are known to pose a slightly higher risk of causing allergic reactions due to their faster curing capabilities. However, it is important to note that while methacrylates are less likely to cause allergies, they still require careful handling due to their strong bonding properties and potential chemical hazards.
The nail salon industry is a multi-billion-dollar business, with a significant number of salons offering gel nail products that contain methacrylates. As a result, methacrylates are becoming common contact allergens among consumers and nail technicians. Approximately 2.6% of patients with contact dermatitis react to hydroxyethyl methacrylate, the most commonly sensitizing methacrylate, on patch testing. Therefore, it is crucial for nail technicians to understand the potential risks associated with methacrylates and take necessary precautions, such as using protective gear and ensuring proper ventilation during the application and removal processes.
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Oligomers
The urethane acrylate oligomer base, used in gels, has a tight molecular structure, resulting in a lower molecular weight. This makes the gel feel lighter and highly resistant to solvents. Urethane acrylate oligomers offer superior toughness and scratch resistance, making them ideal for gel nails.
Bomar oligomers, for example, are used in nail gel coatings to provide a non-yellowing, high-gloss finish. They also help to overcome common issues such as low gloss, colour drift, premature chipping, and regulatory compliance. Bomar oligomers are suitable for various nail gel coatings, including hard gels, soak-off gels, top coats, colour coats, and base coats.
In the context of Milady nail enhancements, oligomers are mentioned as a main ingredient in light-cured gels, providing shine and rigidity. They are described as short chains of monomer liquids that are often thick, sticky, and gel-like.
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Monomers
There are various types of liquid monomers, such as EMA (ethyl methacrylate) and UV LED liquid. EMA is a type of acrylic monomer used in traditional acrylic nails, while UV LED liquid monomers have a faster curing time, allowing for quicker application and reduced client wait times. It is important to note that UV LED monomers require UV or LED light to cure, unlike EMA monomers.
When purchasing liquid monomers, it is essential to choose a high-quality product, especially for use in a salon setting. Some monomers may have a strong odour, which can be off-putting to clients. It is recommended to opt for monomers with little to no odour to maintain a pleasant atmosphere. Additionally, using clean brushes is vital when working with liquid monomers. Dirty brushes can contaminate the liquid, leading to a lumpy and uneven application, making it challenging to achieve a smooth finish.
The monomers in gel polish undergo a rapid chemical change called polymerization when exposed to UVA rays, resulting in the durable finish characteristic of gel nails. This process takes 30 to 60 seconds per layer of polish, significantly reducing the risk of smudging compared to regular polish, which can take over an hour to cure completely.
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Polymer Powder
The L&P (Liquid Monomer and Polymer Powder) system involves mixing the two components in the correct ratio. The ratio is crucial, as too much or too little of either component can result in a weak or brittle nail coating. The liquid monomer typically consists of ethyl methacrylate (EMA) and other additives, while the polymer powder contains thermal-initiators, usually benzoyl peroxide (BPO). These thermal-initiators are heat-sensitive and play a vital role in the polymerisation process, providing additional strength and structure to the nail coating.
The L&P system offers a durable and long-lasting solution for manicures, but it is important to handle the products with care. Allergic reactions can occur due to the allergens present in the monomer liquid. Therefore, it is essential to avoid skin contact and ensure that the products only come into contact with the nails. Proper handling of the L&P system can help ensure a safe and effective manicure experience.
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Frequently asked questions
The main ingredients in gel nails are acrylates, oligomers, and polymers. Acrylates are adhesive-based and are used to sculpt and adhere to the nail. Oligomers are short chains of monomer liquids that are thick, sticky, and gel-like but are not long enough to be considered polymers. Polymers with reactive methacrylate groups form an interconnected polymer network that gives gels their chip resistance and staying power.
There are two main types of gel nails: soft gels and hard gels. Soft gels have a flexible polymer network and can be removed by soaking them in solvents such as acetone. Hard gels are rigid and impermeable to solvents and must be filed off.
Gel nails are more durable and long-lasting than regular nail polish. They are also less likely to chip and can be removed by soaking or filing.
