MMA, short for methyl methacrylate, is a liquid nail monomer that Utah's cosmetology facility sanitation rule, R392-702-11, prohibits by name. The rule does not mention EMA and does not name any monomer as a required replacement, so the simplest way to know what a salon uses is to ask directly. A strong odor, a set that resists filing, or one that will not soak off are each worth a question on their own merits. If a nail is separating from the nail bed, or you notice pain, swelling, signs of infection, or a skin reaction, see a doctor or dermatologist.
MMA and EMA are both liquid nail monomers, the liquid mixed with acrylic powder to build a full set. Only one of them is named in the state's cosmetology facility rule, and it is named as something operators may not use. The other, EMA, is not mentioned at all.
Here is what the rule actually says, what it leaves open, and what is worth asking before you book anywhere, this salon included.
What MMA Actually Is
MMA is a liquid nail monomer, mixed with acrylic powder to build enhancements. MMA and its polymer PMMA are also used in orthopedic bone cement and dental prosthetics, a separate use unrelated to nail products. The concern is specific to how MMA behaves as a nail liquid: the FDA and nail-industry sources have documented it as associated with fingernail damage and deformity and with contact dermatitis, and in some reported cases with permanent loss of the nail plate or fingertip feeling from repeated exposure to the liquid.
The Rule, In Its Own Words
Utah Administrative Code R392-702-11 lists substances a salon operator may not use. It states: “Operators may not use any of the following substances or products in performing cosmetology services:” The first item named is “Methyl Methacrylate Liquid Monomers (MMA);” and that is the whole of Section 11’s language on MMA: a flat prohibition with no percentage attached.
A separate statute also addresses MMA, with a different scope. Utah Code § 58-11a-502(3) makes it unlawful to use or possess “a solution composed of at least 10% methyl methacrylete on a client” (the statute’s own spelling). One prohibition sits in the facility sanitation rule; the other sits in the unlawful-conduct section of the state’s cosmetology licensing act.
What The Rule Does Not Say
It is worth being precise about the limits of that language. The rule prohibits methyl methacrylate. It does not name ethyl methacrylate, EMA, anywhere in the text, and it does not require any particular monomer as a replacement. Banned and required are two different claims, and the rule only makes the first one.
The same section also restricts a completely different item: razor-type callus shavers, including credo blades or microplanes, which it prohibits unless the operator is licensed with the Utah Division of Professional Licensing as a Master Esthetician. It is a separate prohibition about a separate tool, unrelated to nail liquids. The callus-blade rule for pedicures covers that provision on its own.
How Other Regulators Treat MMA
Other states restrict MMA as well. Florida, for example, makes it unlawful in the practice of cosmetology to use or possess a liquid nail monomer containing any trace of MMA. At the federal level, the FDA has not banned MMA nationwide under cosmetics law. After receiving complaints of injury in the early 1970s, though, the agency took legal action, an injunction, product seizures, and voluntary recalls, to remove products made of 100% MMA monomer from the market, and it continues to advise against using MMA in nail products.
MMA liquid monomer is on the state's list of substances operators may not use.
Signs Worth Asking About
None of this means interrogating anyone before an appointment. A few things are worth keeping in mind as reasons to ask a direct question.
- A very strong, sharp chemical smell, stronger than a typical acrylic liquid.
- An enhancement that will not soften or soak off in a normal acrylic remover.
- A set that resists an ordinary file, even with a coarse abrasive.
- Pricing well under the rest of the market for a comparable set.
None of these proves anything by itself, so ask the salon directly.
Why Removal Matters
Nail-industry technical sources describe MMA-based enhancements as curing much harder and more rigid than EMA-based acrylic, and as highly resistant to acetone. A normal soak-off is how EMA-based acrylic is meant to come off; an MMA set that will not soften that way is typically filed or pried off, and forced removal is what risks the natural nail underneath. Getting your nails back after acrylics or gel covers what regrowth looks like if a set ever leaves your nails thin.
Ask When You Book
The MMA prohibition covers cosmetology services performed anywhere in the state, including here. It is fair to ask any salon what liquid monomer it uses, the same way you would ask about anything else that goes on your hands. For Aloha Beauty Lounge, ask when you book. If you are weighing systems entirely, from a classic acrylic full set to a pink and white or ombre set to gel or dip powder, those comparisons are worth a read first.
Where To Find Us
Aloha Beauty Lounge is at 10509 S River Heights Dr #104, South Jordan, UT 84095, opening Thursday, October 29, 2026. The service area covers Daybreak, Riverton and the rest of the Salt Lake Valley. Call (801) 909-8989 with questions, and see every acrylic and dip option on the service menu.
Frequently Asked Questions
Is MMA legal in nail salons here?
No. The state’s cosmetology facility rule prohibits Methyl Methacrylate Liquid Monomers by name, and a separate statute makes it unlawful to use or possess a solution composed of at least 10% methyl methacrylate on a client. Both cover nail services performed in the state, including at Aloha Beauty Lounge.
Does the rule require salons to use EMA?
No. Neither the facility rule nor the separate statute mentions EMA, ethyl methacrylate, at all. The rule bans MMA by name and does not name a required substitute.
What is the difference between MMA and EMA?
MMA is the liquid monomer the rule names and bans. EMA, ethyl methacrylate, is a different liquid monomer that the rule does not mention. Nail-industry sources describe MMA as curing far harder and resisting the acetone that a normal soak-off remover relies on.
What are the signs a salon might be using MMA?
A very strong chemical smell, an enhancement that will not soften in a normal soak-off remover, and a set that resists an ordinary file are all worth a direct question, since none of them is proof on its own.
Does the MMA ban apply to Aloha Beauty Lounge?
Yes. The prohibition covers cosmetology services performed in Utah, including at Aloha Beauty Lounge. To find out which liquid monomer is used for a specific service, ask when you book.
What if a set lifts, or my skin reacts after a set?
An enhancement from a nail service at Aloha Beauty Lounge that lifts, chips or breaks within 10 days is repaired at no charge; call (801) 909-8989. A natural nail separating from the nail bed, pain, swelling or a skin reaction belongs with a doctor or dermatologist, so mention which product was used if you know it.
