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a year ago
Nice salon. Dropped in (called ahead while in my car) for a manicure as I was heading in that direction to pick up one of my kids. First time here. Manicure was well done by Jennifer. Salon is more spacious than it seems from outside. Staff is friendly. This is definitely a great back up to my usual salon.
- Jennifer A
5 months ago
I absolutely love this salon and have been coming to Cosmo Nails for nearly two years. They always accommodate my appointments and I never feel rushed. The pedicures are relaxing and Chris always does an incredible job with the UV gel manicures. Highly recommend!!
- Jessica A
3 years ago
This is the best gel manicure in the area--I've had several manicures here and it never chips. Even after three weeks. All of the manicurists here are very nice and take their time. The salon is clean and quiet. The photo with the blue nail polish is how my manicure looked AFTER two weeks. 👏💯
- Adriana D

About us

Cosmo Nails' owner, Michelle Yi, bought out Best Nails & Hair that had been at the location for eight months in March 2019. After the entire remodeling of it, she opened her second nail salon Cosmo Nails on April 2019. Before Best Nails & Hair, there had been Best Nails for 16 years. Michelle is an NJ & NY licensed aesthetician and has been running Riju Nails & Spa at 1100 South Ave. W., Westfield NJ since 2008 very successfully. Riju Nails & Spa became not only one of the most favorite places to go in the town but also one of the most popular nail spas in Union County. We are proudly announcing that Cosmo Nails and Riju Nails in Westfield are sister-nail salons under the same ownership and management of Michelle Yi.

Contact Us


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  • (908) 928-0303


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342 South Avenue East
Westfield, NJ 07090

Business Hours

Mon:9:30 AM – 7:00 PM
Tue:9:30 AM – 7:00 PM
Wed:9:30 AM – 7:00 PM
Thu:9:30 AM – 7:00 PM
Fri:9:30 AM – 7:00 PM
Sat:9:00 AM – 6:30 PM
Sun:10:00 AM – 6:00 PM
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