What is HEMA?

Today, we want to bring the truth to the nail industry and to all of the Manicure Lovers.

To be precise, what we are going to talk about today is "HEMA Free gel polish"

HEMA is one of those words that if you have heard Hema before, It’s kind of those crazy words that’s taken the industry by storm and people will have a huge reaction to it. And a lot of us don’t even know why we have a huge reaction.

Now let’s talk about what Hema is and why Hema could potentially cause problems

Hema, it’s chemical name is 2-Hydroxyethyl methacrylate

• So is Hema a necessary component in gels?

Actually Hema is added because it gives us really good adhesion of the natural nail.

Natural nails are made of keratin and keratin protein likes that are carboxylic acids and Hema is sort of a long-chain carboxylic acid with a hydroxyl group on one end.

The OH group on the Hema allows it to be more miscible with water so if you have water on you fingernails, so it doesn’t reject the Hema. Hema is also really good as its seen it only has one functional reactive site for the UV cured systems or acrylic systems. So because it only has one of those carbon-carbon double bonds on one end that’s the methacrylate, because it only has one of those it only can enter into one portion of a die functional reaction. So it becomes a chain terminator. If chains could get too long they can become too rigid or they can become too brittle or just not good adhesion.

So, Hema isn’t inherently a bad thing because it creates great adhesion to the natural nail plate, it could bonds with that. But one of the downsides of Hema is that it can get out of control if it’s not bound within the formula properly, or if you get it on your skin, and when you are applying things that contain monomeric Hema you want to make sure that you avoid skin contact. And that’s why as you may have see on pretty much every label for nail care products says “avoid skin contact”

• But there are ways that we can make formulas even safer than having Hema added. 

And so if you see Hema on the ingredient list that’s not necessarily a bad thing, but question might come up what’s the concentration of Hema in a systerm. If the product has 40 percent concentration of Hema in a gel polish system, that increases the chance of becoming allergic to the Hema. There is other molecules that we can use that also have good reactions and good adhesion in a natural nail.Take Hema’s sibling HPMA Hydroxypropyl methacrylate has one additional carbon atom in the backbone and that Hydroxypropyl methacrylate is less allergenic. So some products wind up taking something that has 50％ Hema to 25％Hema and 25％HPMA. And there’s other monomers can be added in there as well.

What’s the best solution?

The answer is “oligomers”. So how it compares to a monomer? 

Oligomer is typically molecule has been built based on the backbone of one of the resins so it’s basically Hema but attached to the Oligomer chain.  And oligomer is ten times the size of Hema monomer. As a result, It’s less likely to enter you bloodstream if it comes in contact with your skin, which makes it safer.

So why companies choose to put so much monomer instead of choosing to put more oligomers in their product?

The answer is very simple. Because Hema is very cheap, so with more Hema, the price will be cheaper. Because it reduces the raw material cost. Oligomers on the other hand are mega expensive. Compared to Hema the oligomers are about 10 times the cost.

As for unna, our brand was born with the goal of being 100% HEMA-free, and we tested the most common gel polishes on the market that claim to be HEMA-free. The result is that almost none of them can do so. 

We are willing to accept the test from the market and we are confident that we will become the new standard in the nail industry. We are looking for partners and agents all over the world. If you want to start your own business, please contact us and we will help you get started.

1: "Poly gel" also known as extension gel, or false nails. Even if your nails are short, you can make longer false nails with poly gel. On extension nails, you can do the same nail art style as on regular nails.

2：Acrylic nails are an extension on your natural nail. In order for them to be applied, your natural nail bed is filed down to create a rough surface for the glue to be able to adhere the nail extension. This will be shaped and buffed, and then painted with either regular or gel polish.

3：It sticks to your nails and hardens over time, lasting 3 to 4 weeks. It has the advantage of being suitable for people with fragile nails. However, at the same time, if it is not removed properly, it may harm the original nail.

Why Gel Nail Polish is better than Regular Nail Polish？

Regular nail polish is always tried and true. 

This is a necessity for middle school students to spend the night away, and a staple for the working woman’s outfit planning. 

But what about gel nails? What can gel manicure give you that regular nail polish can't give you?

Gel manicure has still quickly become the main product of salons. 

Nevertheless, for those who are not sure whether to try new gel polishes, we have collected their benefits for you:

1. Quick-drying

Gel nail polish is thicker than regular nail polish. 

The main feature that distinguishes it from classic manicure is part of the curing application process 

because gel nail polish does not dry naturally.

Curing refers to putting the nails under LED or ultraviolet light to activate the chemical process to dry each layer of nail polish. 

Considering that the gel nail application has extra time to repair the nail polish, 

you can immediately leave your appointment or home application to completely dry the nail.

   2. Chip-free

Quick-drying, durable formula, gel polish is hardly broken. 

Your gel manicure is very resistant to peeling or stains, and the color will be as bright and shiny as the first day.

   3. Durable

Gel polish can be used for at least 2-3 weeks, while regular nail polish will not fall off for a week. 

In the case of light application, your gel nails last at least twice as long as normal nail polishes, 

but in fact, they can make your nails four to six times the standard.

Take the core ingredient color powder as an example: 

when creating nail art, it is sometimes necessary to apply each color layer very thinly, 

with a thin multi-layer color overlay that brings an exceptionally soft visual beauty. 

The thickness of each layer is so thin that it can only be counted in microns after the color layer dries, 

which requires the particles of the color powder to be very finely ground. unna selects German color powder, 

processed by ultra-fine grinding process into nano-level color paste, super fine and smooth.

To use nail polish, brush on the nails with the included brush and dry naturally or with a special air dryer (because it contains flammable ingredients, it cannot be dried with ordinary heat sources). To remove nail polish, use a solvent called polish remover, the main ingredient of which is acetone.

• How to paint on nails with colored nail polish?

• How to choose the right color nail polish?

• What are the function of using nail polish and why do we need to buy them?

How to paint on nails with colored nail polish?

1. Before applying each coat of nail polish, be sure to wait for it to dry. It is better to apply layer by layer than to apply too thickly

   
   

2. Apply nail polish indoors.

   
   

3. Grooming pens can come in handy when nail polish is applied to the skin.

   
   

4. Never put nail polish in the refrigerator. Too cold or too hot will just make the nail polish either too thick or too light.

   
   

5. Apply clear nail polish to your fingertips to keep your nails looking bright and stable.

How to choose the right color nail polish?

Before choosing a color, you must first consider the effect you want to achieve, after that all in all, even if the color of the nude nail polish is similar, there is still a difference in depth. If you want to make your hands look white, choose a slightly darker polish to whiten your hands. If you want your fingers to look longer, choose a color that is similar to your skin tone to visually create a stretch. In short, don't choose a shade lighter than your skin tone, as this will make your skin look darker than if you didn't use the nail polish. If you like the regular style, just add a layer of gloss oil on top of the nail polish, which will add durability and shine. What's more, choosing a nail polish with shimmer particles or sequins will instantly bring the original understated nude to life. You can also do the opposite and make it a matte finish that looks rough.

What are the function of using nail polish and why do we need to buy them?

Nail polish (also known as nail varnish or nail enamel) is a lacquer that can be applied to the human fingernail or toenails to decorate and protect the nail plates. The formula has been revised repeatedly to enhance its decorative effects and to suppress cracking or peeling.

The brand UNNA origins from four words: unlimited, nail, new, artist which shows the mission of the brand - Unlimited new colors are made for nail beauty artists. UNNA finally developed a breakthrough system with 900 colors specially designed for all the nail artists to simplify color selection, with impressive and powerful visual effects. Besides, UNNA’s compound formula consisting of the medical photosensitive resin and cosmetic color paste makes its gel more outstanding.

How to get a healthy manicure?

Many girls have the habit of getting a regular manicure, but if it is not done properly or too often, it can be harmful to the health of your nails.

Hazards of frequent manicure

1. Thinning of nails after polishing

The nail will be polished first, resulting in thinner, softer nails and damaged nail enamel. After the nails become thin, they will be easily infected by fungus. Many people use their hands to peel off the nail polish when the nail polish is not completely off, so the surface layer of the nail will also be damaged.

2, easy to get infected

Some street stores hygiene is not up to standard. Nail services there have many problems, such as used towels, tweezers, clippers and other tools, can't get frequent disinfection. Using unclean tools, customers can easily be infected with ringworm, gray nails, nail fungus, hepatitis and other diseases.

3, poor quality nail polish is harmful to the human body

Many nail salons use cheap nail polish, poor quality nail polish will make the nail surface pigmentation, dry, yellow, brittle, dull, and with irritating odor, also has a negative impact on human health.

How should I do my manicure?

1.  Choose your nail salon carefully. be sure to use the proper business production of nail polish.

   
   

2.  reduce the frequency of manicure. The nail growth cycle is normally an average of 0.1mm per day.

3. The average daily nail growth cycle is 0.1mm, and a healthy and intact nail is usually trimmed once every 7 to 11 days. If you do nails for a long time, the chemical elements in the nail polish will affect the growth of the nails, it is recommended to do a manicure once a month, remove it and then do a new one after a week. The nails will be allowed to have a break in between 5~10 days to maintain the natural beauty of the nails.

   
   

4. After doing a manicure, you can use alcohol to disinfect your nails to avoid bacterial.

   
   

5. If you do nail art in summer, it is better to do semi-paste or French style, and try to remove the nails within three weeks.

   
   

6. After removing the nail, you can apply moisturizing cream or cuticle oil. Cuticle Oil can nourish the nail contour and help to get rid of cuticles. Or soak your nails in extra virgin olive oil for 10-15 minutes to help strengthen damaged, fragile or easily broken nails.

The nail polish contains a lot of acetone and ethyl acetate. In order to achieve the purpose of making the nail polish dry quickly, a large amount of acetone and ethyl acetate are added. The characteristics of these two components are extremely volatile, so the nail polish can be dried quickly.

• What are the principles of choosing nail polish?

• What are the effects of using colored nail polish?

• How to choose the right nail polish according to your skin?

What are the principles of choosing nail polish?

Specifically, the choice of nail polish color should follow the following principles:

1. Because of the yellowish skin tone of oriental women, the application of gray and yellow nail polish on the nails will make the skin color appear darker and duller.

   
   

2. Mature and dignified women may choose light yellow and silver-gray nail polish to make French nails, which will give people an elegant and beautiful feeling.

   
   

3. When attending dinner parties or social activities, you should choose gold, red, purple, and other luxurious nail polishes to match evening dresses, which will make people look more dazzling.

   
   

4. Women with long and fair hands can choose bright rose-red nail polishes to make the fingers more delicate and beautiful.

   
   

5. Office workers or students should choose elegant and steady red, light pink, or translucent nail polish, which will make people feel more natural and not exaggerated.

   
   

6. Ladies who like to highlight their individuality may wish to choose nail polishes in popular colors. Such as bright white, silver, metallic purple, etc., coupled with distinctive clothing, it must be refreshing.

What are the effects of using colored nail polish?

Paint flat paint for more color.

Flat color painting usually uses a relatively thin color glue or acrylic paint to paint a two-color or multi-color changing effect. But if the surface is too smooth and the color is brushed on with one stroke, no more paint or color glue can be retained. The surface of the frosted seal after drying has many fine particles and unevenness. This will allow more color to stay on top, making the color thicker and more saturated, and the painted petals will be more colorful and colorful.

How to choose the right nail polish according to your skin?

pale or light skin:

A pale complexion requires a richer skin color. It is generally considered cool toned. It's best to choose pink or blue pastels, but avoid dark shades that create unwanted contrast. For this skin tone, pastel and nude nail polish are a perfect match.

Fair-skinned:

Fair-skinned women have a variety of nail polish colors to choose from because of the variety of shades that can be applied to their skin tone. Colors you should avoid are bright red nail polishes as these can overwhelm fair skin tones. However, if you want to use complex colors, you must avoid green and orange shades.

If you want to order a nail polish, you must choose Shanghai Young Beauty Cosmetics Co., Ltd, because they can provide the most high-quality and cheap nail polish.

Gel nail lamps: UV vs LED?

Do you often get a lot of questions about the lamps used in manicure? After all we have talked about the gel application, we should also be clarified with the lamps. Because if you don’t have curing down it doesn’t matter how awesome your application and your nail are, it’s all going to come off. And we definitely don’t want that for ourselves or our clients.

• The first question is: What's the difference?

Here is a picture of a traditional UV lamp. It’s probably the most common that you’ll see especially if you’re just starting out or if you’re looking for a cheap type of lamp. This is the very original one. What a traditional UV lamp really is, is a CFL UV lamp CFL means compact fluorescent. And there is also CCFL which means cool cathode or cool compact. And the fluorescent bulbs in it are what makes it work. This fluorescent light bulb emits a portion of the spectrum of UV light. So with this, you can cure the gels. This lamp was usually used about ten years ago.

But now days, LED has completely taken over. It has a different type of light bulb inside. And LED stands for light emitting diode. You may find some of the LED bulbs have different colors, some are yellow some are transparent. That’s because they have different style of dome over the bulb to spread the light and also to protect the bulbs.

And what important is this is also UV lamp. So you can see the difference, CFL lamps and LED lamps are both UV lamps but with different bulbs. And they both cure gel polish.

• So why are CFL lamps are replaced by LED lamps?

1. LED UV lamps are able to emit the full spectrum of light needed to cure both traditional gels and the newer LED formulas and so they can cure all the gels. So you don’t need to replace the bulbs to cure specific gels. And you can expect it to last five years or more and it almost never lose power.

2. You don’t need to replace the bulbs in LED lamps.

The bulbs in CFL lamps usually need to be changed after six months, because they lose their ability to cure. And LED lamps don’t have that problem.

  3. LED lamps take less time to cure the gels.

How do we choose the right UV nail lamp:

In the past CFL lamps could take up to five minutes to cure traditional gels. But LED lamps with that focus very high penetrating type of light that’s going into the gel, they only need up to 1 minute to cure the gels. So LED lamps not only do faster but also better job.

But because LED lamps doesn’t glow as much as CFL lamps. It’s very focused. So you have to ensure that the number of LED bulbs to be more but also arranged properly, even on the sides. 

• what wattage led lamp do i need for gel nails?

About 36 watts.

the wattage of lamps is divided into 9 watts, 18 watts, 36 watts, 42 watts, the higher the wattage nail hardening speed is faster, but you need to check the relevant information before using.

The light of the nail lamp belongs to the long-wave ultraviolet light, generally does not produce serious damage to the skin, but it does make the skin tanned, aging.

Although it is harmless to take a short time to cure, you should always pay attention to the maintenance of your hands. It is best to apply sunscreen and then do your manicure

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