To harden gel nail polish, people place their hand under a lamp that emits UVA rays for anywhere from 30 seconds to a few minutes, depending on the type of the device. LED lamps have much shorter curing times, but that’s because the UVA rays they emit are much more intense than regular UV lamps or even the sun, Adigun said.

Yes, after applying chrome powder you fully cure the top coat. Chrome powders are variations of mica powders, which are a bit delicate in UV. They will break down if overcured. They can be sealed by standard top coat, which is (technically speaking) a type of acrylic resin even though it is a gel.
About this item [High Power UV Nail Lamp] UV gel nail lamp adopts advanced dual light beads technology to simulate uv sunlight to cure all kinds of nail gels.A whopping 220 watts of power offers 80% faster curing speeds than lower wattage UV nail lamp.57 UV+LED lights are scattered evenly on the top and sides of the lamp.Enjoy ideal professional salon nail art easily and freely at home.Tips
You have two nail lamp options that will successfully complete the nail look. Keep reading to learn the difference between UV and LED lamps. Understanding UV Lamps. Curing lamps get their names based on the light the lamp emits. UV refers to emitting ultraviolet light, and it has a short wavelength that’s around 350 nanometers.
Aedavey Cordless Nail Lamp, 120W Rechargeable UV Light for Nails/Acrylic Polish, LED Nail Lamp with 4 Timer Modes, Sparkling UV Nail Lamp Decorate with Colorful Nail Rhinestones Diamond Melodysusie UV LED Nail Lamp True 54W Professional Dryer for Gel Polish Curing with 3 Timer Setting, Automatic Sensor, LCD Display, Detachable Tray Art Tools
Dry most of gel: and suitable for drying most UV-led gel nail polish, but please notice it can't dry the regular nail polish that no contain UV. Fast Dryer: 72W high power UV led nail lamp with 15pcs UV/LED double light source beads(365+405nm), So easy to dry the gel quickly and efficiently. You can clean it with a wipe.
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do uv led lamps work on regular nail polish