Safety, Product Chemistry, and Equipment Handling
Chemistry you actually need
Nail products are built on acrylic monomers and polymers, solvents, resins, and acids. EMA (ethyl methacrylate) is the standard monomer; MMA is prohibited in most states because it is hard, brittle, and difficult to remove. Acetone dissolves acrylics and polish and is highly flammable - cap it, keep it away from heat, flame, and outlets, and never store it in an open dish near a client's hands while a lamp is running.
Primer is acidic and should touch the plate, not the skin. Some clients are sensitized to acrylates (HEMA in particular), which is why uncured product on skin must be avoided and why ventilation matters.
Understand pH: acids and alkalis can burn; never mix products unless the label says to, and never transfer chemicals into unlabeled bottles.
Safety Data Sheets and storage
Every product has an SDS listing hazards, first aid, and handling. Products are stored closed, labeled, away from light and heat, and out of reach of children. Flammables go in approved containers; aerosol cans are not punctured.
Equipment
Electrical equipment requires intact cords, no water contact, and ground-fault protection. UV/LED lamps are cleaned and bulbs replaced per manufacturer. Disconnect before cleaning. Sharps and files are disposed per state rule.
Traps to expect
- Claiming acetone is “safe because it evaporates.”
- Saying MMA is acceptable if the client wants a hard nail.
- Storing monomer in an unlabeled squeeze bottle.
- Using a lamp with cracked bulbs and assuming it still cures.
Rule of thumb
No label, no use; no SDS, no product; no ventilation, no service.