Loções, poções e esmaltes

Formaldehyde is a naturally occurring chemical compound found in many everyday environments. While it has gained a negative reputation, particularly in the beauty industry, it’s important to distinguish between fear-based misinformation and scientific facts. In nail salons, concerns about formaldehyde levels are often based on misconceptions. This article explores the truth behind formaldehyde use in nail products and clarifies whether it poses any genuine risk to nail professionals or clients.

Os níveis de formaldeído nos salões de beleza não são seguros?

No, formaldehyde is not a problem in nail salons and never has been. The so-called risk of formaldehyde in nail polish campaigns was designed to mislead consumers, not to inform them. Here’s why I say this: a multi-year independent scientific study was performed under the guidance of the California State Attorney General with the goal of measuring formaldehyde levels in salons.

Níveis de formaldeído em ambientes de salões de beleza

Muitos tamanhos e tipos de salões foram testados no norte e no sul da Califórnia e durante o inverno e o verão, razão pela qual o estudo levou mais de um ano para ser concluído. O estudo demonstrou de forma conclusiva que os níveis de formaldeído nos salões de beleza não são diferentes do que seria esperado em outros locais de trabalho comuns em que os produtos para unhas não estivessem em uso. O interessante é que, durante o estudo, observou-se que os níveis de formaldeído eram mais altos pela manhã, quando o salão abria, e depois caíam continuamente durante a manhã, atingindo seus níveis normalmente baixos à tarde.

Por que o formaldeído pode se acumular durante a noite

When the salon was closed for the night, traces of formaldehyde gas can build up as they normally do in closed spaces. Traces slowly escape from carpet glue and building materials, such as plywood. When a salon is opened and the air begins to circulate, the formaldehyde levels drop back down to normal levels. Even so, all the measured air concentrations in the nail salon study were considered safe.

Constatações oficiais sobre a segurança dos salões de beleza

Quando o estudo foi concluído e o relatório final foi emitido, as autoridades governamentais da Califórnia determinaram que, com base em dados extensivos de exposição em salões de beleza, todos os níveis de formaldeído em salões de beleza provenientes de esmaltes, tratamentos e endurecedores de unhas eram tão baixos que não são necessários avisos ao consumidor. Em outras palavras, o esmalte de unha não libera gás formaldeído no ar para criar qualquer risco à saúde, mesmo sob o que é provavelmente a regulamentação mais rigorosa sobre formaldeído do mundo.

Conceitos errôneos sobre o formaldeído em produtos para unhas

This is because nail polish has never contained formaldehyde gas as an ingredient. Fear-based advocacy groups have tricked consumers into thinking that it does, but it’s just a big deception intended to frighten your friends, family, and customers to get them to donate money. Any gases in nail polish could only exist in very tiny traces, e.g., 0.0001% or a ten-thousandth of a percent!

Entendendo a resina de formaldeído tosilamida

Some confuse a hard polymer resin called tosylamide formaldehyde resin, thinking this solid polymer is the same as formaldehyde gas. It’s not even close. It can be a source of traces of formaldehyde dissolved in solution, but these are very safe levels and will not cause harm. Some claim these are dangerous because they release formaldehyde – well, so do people. We naturally exhale traces of formaldehyde in our breath because our bodies naturally make and use formaldehyde on a daily basis.

Formaldeído como um alérgeno em potencial

While the levels of formaldehyde found in salons are generally considered low and safe, it’s important to acknowledge that formaldehyde is a known sensitiser and allergen for some individuals. Prolonged or repeated exposure, even at low levels, can trigger allergic contact dermatitis, particularly in those with existing sensitivities. Symptoms may include redness, itching, or rash, especially on the hands and fingers. For this reason, professionals who experience skin reactions should consult a healthcare provider and consider using gloves or alternative products that are free from formaldehyde-releasing compounds.

Esclarecimento dos níveis de metilenoglicol e formaldeído

Some nail hardeners contain “methylene glycol” at around 1-2%. In the past, manufacturers were required to call this ingredient by the incorrect name, “formaldehyde,” rather than its correct name, “methylene glycol.” This error has since been corrected, but it’s probably where the confusion began. Even when informed of their error, some advocacy groups continued to ignore the facts and spread misinformation.

Desmascarando informações errôneas sobre os níveis de formaldeído

These groups claimed that up to 5% formaldehyde was used in nail polish, which was another huge distortion. When methylene glycol is used as a nail hardener, usually at 2% or less, the container typically contains less than 0.001% dissolved formaldehyde gas – not nearly enough to cause any harm. Even if all the formaldehyde suddenly came out at once, it still wouldn’t be harmful. Our bodies naturally exhale formaldehyde with every breath, and it’s even found in some organic foods like apples.

Níveis seguros de formaldeído em salões de beleza

Formaldehyde is not the terrible boogeyman these irresponsible groups claim it to be. The claim that there are no safe levels of formaldehyde is simply not true. Formaldehyde does not absorb through the skin or nails, as some falsely claim. It only poses an inhalation risk at high concentrations over long periods – levels that would never be reached in a nail salon.

Conclusão: Confie nos fatos sobre os níveis de formaldeído

Clearly, nail professionals are not exposed to significant amounts of formaldehyde gas, nor is there any risk of harm from the tiny traces found in salons or nail polish. Nail salons do not need to monitor formaldehyde levels because the risk is negligible. Don’t let fear-based groups mislead you – nail polish has been safe for over 80 years, and there’s no evidence to suggest otherwise.

Isso nos é perguntado com frequência: “If the nail plate is ‘dead,’ does cuticle oil really work?” It’s a valid question, and the terminology floating around online can often be confusing or misleading. The truth is, while the nail plate is made of dead keratinised cells, that doesn’t mean it doesn’t benefit from proper care.

Então, deixe-me esclarecer as coisas e dar a você minha melhor orientação sobre por que os óleos para unhas são essenciais e como eles realmente funcionam.

Nails Are ‘Dead,’ But That Doesn’t Make Them Immune to Damage

It’s true that the nail plate is composed of dead, keratinised cells. However, the fact that it’s ‘dead’ tissue doesn’t mean it’s unaffected by day-to-day life. Think of your hair—also ‘dead’ keratinised cells. We still shampoo, condição, and even apply masks and oils to moisturise – to improve its look, feel, and resilience. The same applies to our nail plates. They might not be “alive,” but they can still become dry, brittle, and prone to breakage due to environmental factors, repeated chemical exposure, or just everyday wear and tear.

O que é a cutícula e o que é a placa ungueal?

A cutícula: The cuticle is a thin layer of dead, very sticky skin cells produced by the eponychium hitching a ride out along with the growing nail plate, forming a protective seal at the base of the nail. While important as a barrier, this non-living tissue can be safely removed or softened and gently lifted during professional services to prevent the lifting of nail coatings and to keep the area aesthetically tidy.

A placa ungueal: The nail plate itself is a stack of flattened, keratinised cells that emerge from the matrix. Although it’s ‘dead’ tissue, it still thrives when it’s maintained at an optimal moisture and oil balance. This condition makes it stronger, more flexible, and less likely to peel or crack.

From ‘Cuticle Oil’ to ‘Nail & Skin Oil’

Many top brands have moved away from calling it “cuticle oil” and now refer to it as “Nail & Skin Oil.” I’m quite passionate about this language evolution. This shift in terminology is more than just marketing. It recognises that the true value is in hydrating and protecting both the nail plate and the surrounding living skin structures—such as the lateral nail folds, the proximal nail fold (PNF), and the hyponychium. These areas are very much alive and form essential protective seals that help guard the delicate matrix where the nail is formed and grows.

In truth, we remove the actual cuticle (which is non-living, sticky tissue that forms an important seal), so moisturising the “cuticle” itself doesn’t make sense. Instead, we focus on conditioning the living skin around the nail and the nail plate itself, maintaining a healthier, more flexible, and less damage-prone environment.

Como certos óleos penetram e protegem

Not all oils are created equal. Some, like jojoba and avocado oil, contain smaller or more elongated molecular structures that can penetrate more easily into the superficial layers of the nail plate and the surrounding skin. They won’t dive deeply into the centre of the nail plate the way water might seep into a sponge, but they can and do move into the upper layers with repetitive application. This penetration helps lock in moisture, providing flexibility and protection against brittleness and breakage.

Tocopherol (vitamin E) molecules, on the other hand, are larger and struggle to fully penetrate on their own. However, they’re still incredibly beneficial. When blended with natural oils, tocopherol can “hitch a ride,” allowing some of it to settle just beneath the surface. This is actually where it’s needed most—to provide antioxidant protection near the nail’s surface, helping safeguard against discolouration, UV damage, and brittleness over time.

Três categorias principais de hidratação

Emollients, humectants, and occlusives are three categories of moisturising ingredients that work together to maintain healthy nails and skin. Emollients help smooth and soften by filling in tiny gaps between cells, improving flexibility and texture. Humectants draw moisture into the nail plate and surrounding skin, ensuring it remains hydrated. Occlusives create a protective barrier that seals in this moisture, preventing it from escaping too quickly and shielding against environmental stressors. High-quality nail and skin oils often contain a blend of these ingredient types to provide a balanced approach—nourishing the nail plate, maintaining the skin’s integrity, and promoting a well-hydrated, resilient surface.

• Emolientes: Suaviza e amacia preenchendo os pequenos espaços entre as células, melhorando a flexibilidade e a textura.
  Examples: Jojoba oil, Avocado oil, Almond oil, Squalene
• Umectantes: Absorve a umidade da placa ungueal e da pele ao redor, garantindo que ela permaneça bem hidratada.
  Examples: Glycerin, Hyaluronic acid, 
• Oclusivas: Crie uma barreira protetora que retenha a umidade, evitando que ela escape e protegendo-a contra fatores ambientais.
  Examples: Lanolin, Shea butter, Petroleum Jelly, Cocoa Butter

Por que usar óleos condicionadores?

Conditioning oils don’t just sit on top; they help create a more flexible, impact-resistant environment. This flexibility reduces the chance of breakage and can improve the longevity of your manicure, whether you wear polish, gel, enhancements, or just go Au Natural. Furthermore, the oils help maintain the health of the surrounding skin, encouraging proper barrier function, reducing hangnails, and promoting an overall healthier nail unit.

In other words, while the nail plate isn’t alive, it’s still receptive to what you apply. These targeted oils enhance appearance, support durability, and protect against external stresses. When combined with regular use, you create a consistent layer of defence—like conditioning your hair regularly so it stays shiny, flexible, and resilient.

Em conclusão:

• Yes, the nail plate is ‘dead’—but it still benefits from oils to maintain flexibility and prevent damage.
• ‘Nail & Skin Oil’ is a more accurate term than ‘cuticle oil’ because we focus on living skin around the nail and the nail plate itself, not the removable cuticle.
• Certain oils, like jojoba and avocado, do penetrate and condition the nail’s top layers and surrounding skin. Tocopherol (vitamin E), especially when carried by these oils, protects and prevents unwanted chemical reactions at or near the surface.

Essa pergunta nos é feita com frequência: “Do non-wipe top coats really need to be wiped?” With so much conflicting information out there, it’s understandable to feel unsure. Safety is essential, and knowing the facts helps protect both you and your clients from potential allergies or irritation.

To help clear things up, here’s a detailed breakdown of non-wipe top coats, why some people still choose to wipe, and how to use them safely and effectively.

O que é um Non-Wipe Top Coat?

1. Revestimentos superiores que não precisam ser limpos are designed to cure completely without leaving a sticky or tacky inhibition layer after being cured under a UV or LED lamp.
2. Isso significa que, em teoria, você faz não need to wipe the nail with alcohol or any cleanser after curing.

Por que algumas pessoas ainda podem usar lenços umedecidos

1. Mal-entendido: Some people may be used to traditional top coats (which do leave an inhibition layer) and automatically wipe without realizing it’s unnecessary.
2. Preferência de brilho ou textura: Ocasionalmente, as pessoas acham que a limpeza aumenta o brilho ou a sensação do top coat. No entanto, para top coats genuínos que não precisam ser limpos, essa etapa é desnecessária.
3. Preocupações com a segurança: Some technicians worry that uncured product might be left behind, causing allergies or contact dermatitis. However, if the product cures correctly under a calibrated UV/LED lamp, it should be fully set, and no harmful substances should remain. If you are worried about the incidences of allergies then continue to wipe over the cured coating just in case there is any uncured material. Remember to wipe from base to the tip each time and start with little finger

Práticas recomendadas para o uso seguro de um Top Coat que não seja de limpeza

1. Siga as instruções do fabricante: Ensure you are using a top coat specifically formulated as a non-wipe product. Always trust the manufacturer’s guidelines and use the correct curing times and lamps they recommend.
2. Cura adequada: Ensure your UV/LED lamp is suitable (check wattage and cure times). An under-cured product can lead to uncured monomers causing skin irritation or allergies.
3. Verifique a superfície: After curing, if the nail feels fully smooth and dry, there’s no need to wipe. If it feels tacky, there may be an issue with the curing process, or it might not be a true non-wipe formula.
4. Teste regularmente sua lâmpada: Com o tempo, as lâmpadas podem perder sua eficiência. Certifique-se de que a lâmpada esteja funcionando bem para evitar uma cura incompleta.
5. Conscientização sobre alergias: Se você ou seus clientes tiverem pele sensível, evite o contato direto da pele com o produto não curado, pois isso pode aumentar o risco de alergias.

Conclusão

If your top coat is labeled as a non-wipe product and you are using it correctly with a properly functioning lamp, there’s no need to wipe. Inconsistent advice may come from misunderstandings or concerns about proper curing. Trust the product guidelines and ensure good curing practices to keep yourself and your clients safe.

If you still feel uncertain, consider reaching out directly to the manufacturer’s customer support for clarification or additional advice tailored to their product.

We get asked this question a lot: “Can I use craft glitter with nail products instead of glitters made specifically for nails? Aren’t they basically the same thing?” While it might seem like a harmless swap, there are some important reasons why craft glitters should never be used in nail applications. Let’s dive into the details to clear up any confusion and explain the potential risks.

Por que somente os glitters de grau cosmético são seguros para as unhas

In my opinion, craft glitters sold for arts and crafts should not be used for nail art application and should never be mixed with nail products. I recommend using only glitters and other colorants that are cosmetic-grade. Not just any cosmetic-grade colorant, you should only use those that are specifically sold for use in nail coating cosmetics. Why? There are several good reasons for why I believe this to be true. Many countries, including the US, Canada, Australia and those of the European Union and others have specific regulations concerning which types of colorants can be used in cosmetics. This is done to ensure safety. Those used for crafts or other non-cosmetic uses are not designed for the type of contact that can occur with cosmetics and may cause adverse skin reactions. 

Um alerta na vida real: Reações alérgicas ao glitter para artesanato

An example of what can happen when improper colorants are used. This was reported in a highly respected medical journal in 2012. Several physicians reported a case-study involving a patient that had come to them with an allergic reaction after wearing UV gel nail coatings for about a year. This 37-year-old housewife had never before experienced any type of reação alérgica na pele. Durante três meses, ela recebeu serviços de unhas artificiais from a nail professional and then decided that she could “do it herself”. That was the first mistake she made. After about seven months, she developed multiple, intensely itchy sores on the skin surrounding her nail plates and on the palms of both hands.

Para determinar por que ela estava apresentando essa reação adversa na pele, o médico fez um teste padrão de contato com a pele, expondo-a a pequenas quantidades de uma ampla gama de substâncias comuns que produzem alergia, bem como ao produto para unhas que ela estava usando.

The test results were surprising. The skin testing showed she was NOT reacting to the nail coating product at all, as the doctors may have first suspected. Instead she was having a surprisingly strong allergic reaction to another common allergy producing substance included in the patch testing. She reacted strongly to a substance called “cobalt chloride”, which seemed rather odd, until the patient was questioned further.

 The doctor learned she had purchased some “craft glitters” from the Internet and had been mixing up her own color blends which she applied to her own nails. That was her second mistake. Upon further investigation, it was learned that “cobalt” was listed as an ingredient in the glitters. The cobalt ingredient in the craft glitters was entirely responsible for her allergic skin reaction. Once she stopped using the craft glitters, these skin problems disappeared.

Os perigos dos corantes não cosméticos em produtos para unhas

Cosmetic colorants don’t contain cobalt, nickel, chromium, or other such metals, because these are known to cause allergic skin reactions. Not all metals cause skin allergies. Titanium is an example of one that does not. These allergy causing metals and their derivatives should never be used in any cosmetic products. Even inhaling the dusts of these allergy causing metal colorants can be unsafe. It also is important to understand that not all cosmetic colorants are useful for nail application.

Some contain special additives that can contribute to nail coating service breakdown. For example, some cosmetic colorants have a silicone surface-coated which can block adhesion and contribute to lifting problems. While others contain additives that allow them to be dispersed in water, making them incompatible with nail coating products. Using these can weaken the nail coating and make them more likely to crack or break.

Por que as marcas confiáveis e os revendedores autorizados são importantes

Responsible manufacturers select and test glitters and color pigments before selling them; they choose those that are safe for use and those which are compatible with nail coating products. This takes out the guess work and helps protect the safety of nail professionals and their clients. Now you can see why I recommend that nail professionals only use glitters and colorants specifically designed for nail products. But there’s more, I recommend purchasing only from the manufacturer or their authorized dealers. The Internet is filled with counterfeit products that can be unsafe and may contain potentially hazardous substances that should NOT be used in cosmetic products.

Evite falsificações: use distribuidores autorizados e marcas confiáveis

I wrote an Education Update that warns salon professionals about this issue. In that Update I recommend avoiding purchasing any professional salon products from the Internet unless the product is sold by an “authorized” distributor. Counterfeits are often sold by unauthorized dealers, so beware! These can be found all over the Internet. I also recommend sticking to respected, brand name products. Otherwise, you never know what you’re getting or what’s being used in your services. They may seem cheaper, but they are cheaper for a reason. Most of the time, the safe ingredients have been substituted for cheaper ingredients that may be unsafe.