Bellezza Si Esthetics has quietly built a reputation as one of New Jersey's most trusted skincare destinations. Rooted in decades of experience and an unwavering commitment to individualized care, the studio offers clients more than facials—it offers a philosophy.
At the heart of Bellezza Si is founder Caterina Castaldo, a master aesthetician with more than 36 years of hands-on experience. Born in Italy and raised on the principles of true wellness and beauty, Castaldo brings an old-world ethos to a modern landscape—one that values quality over quantity, consistency over chaos, and connection over trends.
“This is true skincare,” Castaldo notes. “Not what’s trending online, not what your friend got at a med spa last weekend. This is about understanding your skin, nurturing it over time, and tailoring every step along the way.”
From the moment clients step into Bellezza Si, the experience is bespoke. No walk-in menu, no copy-paste protocols. Each client begins with an in-depth consultation before any treatment is offered. And every treatment—from oxygen infusion facials to power peels, EMFACE sculpting, or targeted acne protocols—is custom-built based on the unique condition of the client’s skin that day.
“You wouldn’t wear the same thing every season. Your skin shouldn’t be treated that way either,” Castaldo explains. “We cocktail each service to what your skin needs now—and only when it’s ready.”
That deeply thoughtful, holistic approach is what has kept Bellezza Si’s client base not only loyal, but generational. “Clients will say, ‘My husband noticed my skin,’ or ‘My daughter is coming in next week.’ That trust is sacred to me,” she says.
Joining her aunt in this mission is Caterina De Mattia, her namesake niece and rising skincare specialist. De Mattia, who returned to school to earn her aesthetics license under her aunt’s mentorship, brings youthful energy, curiosity and a shared passion for elevating beauty from the inside out.
“Growing up, I was always the one my friends turned to for beauty advice,” De Mattia says. “Getting to train and work alongside my aunt has been an unbelievable privilege. She’s taught me that real skincare is an art, and a responsibility.”
Together, the two maintain an intimate environment—by design. Bellezza Si only sees a handful of clients a day, each receiving dedicated time, space and personalized care. There’s no rotating door of technicians, no sterile med spa feel. Instead, the studio functions more like a private atelier: appointments are curated, relationships are nurtured, and treatments evolve over time.
“We’re concierge in the truest sense,” Castaldo says. “We know our clients—where they are in their skincare journey, what their next event is, what their skin responded well to last month. That’s the level of attention they deserve.”
This high-touch experience extends beyond the treatment room. Castaldo is passionate about education—teaching her clients not just what to do, but why they’re doing it. From the difference between day and night creams to helping a minimalist client choose just two powerhouse products, her advice is always grounded in real science, not sales.
The spa also uses meticulously sourced, luxury-grade products—including some Castaldo formulated herself in Milan. “My clients deserve the best, so that’s what I give them,” she shares. “But the product is only as good as the skin that receives it. That’s why we focus first on resurfacing and strengthening the skin barrier—so that everything else can work to its fullest potential.”
Castaldo, who travels frequently to Europe and attends elite trade shows such as Cosmoprof Bologna, is constantly evolving her practice, integrating trusted technologies like radiofrequency and microneedling — but only when a client’s skin is properly prepared to benefit from them.
“There is no shortcut to true results,” she says. “You have to do the work—thoughtfully, respectfully, and without rushing.”
In a culture obsessed with instant gratification, Bellezza Si Esthetics is a masterclass in what it means to slow down, tune in, and invest in yourself—intelligently. Here, skin isn’t an accessory. It’s a canvas for confidence, a reflection of health, and a lifelong relationship worth honoring.
And for the clients who make Bellezza Si part of their lifestyle, the results speak for themselves—quietly, confidently, and beautifully.
Bellezza Si Esthetics
Website: bellezzasi.com
Address: 10 Headley Rd, Morristown
Phone: (973) 540-0764