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Interlocks' Transition from Day Spa to Med Spa
Interlocks Med Spa has slowly phased out nail and massage services in favor of dermal fillers, Sofwave and IV Therapy. Find out how Owner Ginny Eramo made the transition to med spa.
October 21, 2025
On paper, the Interlocks Med Spa is a completely separate business from Interlocks Salon, but the two operate together for a seamless experience for clients.
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3 min to read
Interlocks has been a mainstay in Newburyport, Massachusetts, since owner Ginny Eramo established the salon in 1988.In 1992, Eramo opened a day spa next to the salon. Both businesses went through expansions and buildouts over the years, with the side-by-side facilities sharing a front desk. Then, in 2017, the day spa began its evolution into a med spa. Now, the med spa has earned the right to stand on its own.
“We still do waxing and lashes, but we are slowly phasing out of services that are not med-spa services,” Eramo says. “Nail and massage services were break-even or loss leaders for us, but enabled us to be a full-service salon. But that’s changed. We find clients are willing to go to multiple businesses for the quality of service they are seeking. Convenience matters less—quality and price rule.”
With that in mind,Interlocks Med Spa regularly rolls out new services to meet guest demand.
“When Botox came on the scene, it wasn’t openly talked about,” Eramo says. “Now it’s like using moisturizer—everyone wants it.
“The more we offer, the more clients we attract,” she adds. “We just hired another nurse to our team of 17 people—three estheticians, four nurses, and 10 admins.”
How It's Structured
On paper, Interlocks Med Spa is a completely separate business from Interlocks Salon, but the two operate together, as the Interlocks brand, for a seamless experience for the client.
The salon occupies 4,300 square feet of space and the med spa is 3,100 square feet, separated by a lobby in the same building
Eramo worked with Lengea Law, a firm that helps owners build med spas or healthcare businesses legally and confidently. “Understanding compliance is a challenge,” she says. “I had to do a lot of research and networking. In the world of medical services, you’re working under a medical license and must comply with all the Medical Board rules. It’s really important to set up your company correctly and pay attention to licensing and compliance.”
A medical director (nurse practitioner) oversees all clinical services at Interlocks Med Spa. Eramo provides managerial support: equipment, retail, facilities, front desk staff, etc. “Everyone who is clinical works under the nurse practitioner’s license,” Eramo says.
The only people employed by Eramo are non-medical staff like administrative employees, managers and estheticians.
Eramo takes a fee of service income to pay the MSO (management service organization), and nurses receive their earnings directly through services provided.
“I’m the managing director and our nurse practitioner is the clinical director—we make decisions together on pricing,” she says.
Why It Works
Eramo stays on the cutting edge of med spa treatments, incorporating the wellness aspect too. Her menu encompasses everything from IV therapy to Sofwave to dermal fillers and PRF, and continues to evolve as new treatments come on the market.
But proceed with caution: “The med spa industry is full of slick salesmen, and it’s easy to spend a lot of money on a device,” she says.
Eramo and her team trial all treatments themselves and only offer results-driven services. “Our med spa earnings went from $1.8 million in 2023 to $2.5 million in 2024,” she says. “We’ll exceed that in 2025 due to our expansion.”
Key Advice
“Being compliant is really important,” Eramo says. “I have many local competitors who aren’t, and there are price-motivated consumers who don’t know any better. “Estheticians should not be operating medical devices, and it hurts the industry when we’re not being depicted in a professional way.”
“Authentic and trusted” isn’t just Interlocks’ tagline, it’s Eramo’s guiding force. “I only use name brand drugs–no knock offs, and we only hire trained professionals and keep that training going. Nobody performs a service they aren’t licensed to do.”
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