Medicine First
Every treatment decision is grounded in clinical medicine - not trends, not sales targets, not what's popular this season. If a treatment isn't right for you, we will say so.
Founded by Farina Sial, PA, MBA — 25 Years at Mount Sinai South Nassau. Medical Precision. Natural Results. Two Locations Serving Long Island.
Stay Ageless Clinic is a medical aesthetic clinic in Plainview, NY founded by Farina Sial, PA, MBA — a licensed Physician Assistant with 25 years of hospital-based experience at Mount Sinai South Nassau. The clinic offers injectables, Candela GentleMax Pro laser treatments, regenerative aesthetics, skin rejuvenation, HIFU, body contouring, and medical weight loss. Serving Long Island, Nassau County, and Suffolk County.
✨ Every new patient consultation includes a complimentary AI skin analysis — at no additional charge.
The story of a clinic built on medicine, trust, and a belief that patients deserve more.
Before Stay Ageless Clinic had a name, it had a standard. That standard came from 25 years spent inside one of New York's most demanding hospital environments - Mount Sinai South Nassau.
I built this clinic because I saw what patients weren't getting. They deserved better than one-size-fits-all treatments from providers who had never worked in a medical setting. They deserved someone who understood their anatomy, their skin type, and their goals — and had the clinical experience to act on that understanding.Farina Sial, PA, MBA — Founder, Stay Ageless Clinic
Farina Sial, PA, MBA didn't come to aesthetic medicine through a short course or a weekend training. She came through the operating room. Through critical care. Through neurosurgery. Through 25 years on the front lines of hospital medicine at Mount Sinai South Nassau - one of the most respected hospital systems in New York.
During that time, she developed something that no certification program can teach: an intimate, clinical understanding of human anatomy. Of how tissue responds to trauma and healing. Of what precision actually looks like when a mistake has real consequences. That background - paired with advanced aesthetic training - became the foundation for everything Stay Ageless Clinic stands for today.
Stay Ageless Clinic was born in the wake of COVID-19. While many stepped back, Farina stepped forward. She made the decision to build something of her own - a clinic where medical rigor and aesthetic artistry could coexist. Where no treatment was performed without a thorough clinical assessment. Where the patient's safety was always the first and final word.
What began as a small, patient-focused practice grew rapidly - not through advertising, but through results. Patients came back. They sent their friends. They left reviews that described something they had not expected to find: a provider who actually listened, who took the time to explain, and who delivered outcomes that looked genuinely natural. Today, Stay Ageless Clinic has treated more than 1,200 patients, earned over 300 five-star reviews, and expanded to two clinic locations across Long Island.
The clinic that exists today is a direct reflection of what Farina believed medical aesthetics could and should be: clinically grounded, patient-first, and entirely free of the trend-chasing that defines so much of the industry. Every treatment at Stay Ageless Clinic begins with a question: what does this patient actually need? The answer - not a product menu - drives everything that follows.

We combine medical expertise, regenerative science, and precision-based technologies to deliver natural, refined, and long-lasting aesthetic results - in an environment where every patient feels seen, safe, and genuinely cared for.
Stay Ageless Clinic, Plainview, NY
Medical-grade care, natural results, and a standard of safety most aesthetic clinics simply cannot offer.
Every treatment decision is grounded in clinical medicine - not trends, not sales targets, not what's popular this season. If a treatment isn't right for you, we will say so.
Results depend entirely on where and how a treatment is applied. Farina's deep anatomical training - built over 25 years of hospital-based medicine - informs every injection and laser protocol.
We enhance what you have - we do not change who you are. Our goal is always to restore natural harmony, proportion, and freshness.
Aesthetic medicine has not always served every skin type equally. We have made it a clinical priority to offer safe, effective treatments for all skin tones - including Fitzpatrick IV-VI.

Farina's care model is rooted in hospital medicine, advanced anatomy, and individualized assessment. Her background includes NCCPA PA certification, an MBA from Hofstra University, a BS in Biochemistry from the University of Missouri, Touro College of Osteopathic Medicine training, and 25 years of hospital medicine at Mount Sinai South Nassau.
I approach every patient the same way I approached every patient in the hospital - as an individual with a unique physiology, history, and goal. I don't have a menu I work through. I have an assessment I start with. Everything follows from there.
A clean, medically grounded care model built around safety, clarity, and long-term outcomes.
Farina Sial, PA, MBA brings 25 years of hospital-based clinical experience at Mount Sinai South Nassau to every patient encounter.
Every injectable treatment is guided by detailed facial anatomy mapping, precise placement, and careful dosing.
The Candela GentleMax Pro dual-wavelength platform is safe for all skin types including Fitzpatrick IV-VI. Settings are calibrated per patient - never preset.
PRF, EZ Gel, PDRN/Rejuran, exosomes, and K-beauty boosters are used to stimulate repair mechanisms for results that improve over time.
Safe, effective treatment for Fitzpatrick IV-VI patients is a clinical priority, from laser hair removal and melasma correction to regenerative protocols and injectables.
We do not upsell. We assess, explain, and recommend what is right for you - even if that means recommending nothing until the timing is right.
Clear service availability across both Long Island locations.
Public review excerpts used for layout while keeping the page trust-focused.
"Farina is very knowledgeable..."
"Farina is amazing!"
"Thorough, knowledgeable, and truly cares."
Stay Ageless Clinic is a medical aesthetic clinic in Plainview, NY founded by Farina Sial, PA, MBA — a licensed Physician Assistant with 25 years of hospital-based experience at Mount Sinai South Nassau. The clinic offers injectables, Candela GentleMax Pro laser treatments, regenerative aesthetics, skin rejuvenation, HIFU skin tightening, body contouring, and medically supervised weight loss. A second location serves patients in Center Moriches, Suffolk County.
Farina Sial is a licensed Physician Assistant and the founder of Stay Ageless Clinic. She holds a PA certification (NCCPA), a Master of Business Administration from Hofstra University, and a BS in Biochemistry from the University of Missouri. She trained at Touro College of Osteopathic Medicine in New York and spent 25 years practicing hospital medicine at Mount Sinai South Nassau before founding Stay Ageless Clinic.
Stay Ageless Clinic is a medical aesthetic clinic - not a spa. All treatments are performed or directly supervised by Farina Sial, PA, MBA, a licensed medical professional. Clinical assessments guide every treatment plan.
Stay Ageless Clinic offers injectables, Candela GentleMax Pro laser treatments, regenerative aesthetics, skin rejuvenation, HIFU and RF skin tightening, body contouring, and medical weight loss including GLP-1 programs, peptides, IV therapy, and NAD+.
All Candela GentleMax Pro laser treatments, HydraFacial, RF microneedling, HIFU and RF skin tightening, Endospheres therapy, chemical peels, and Lipodissolve are available exclusively at the Plainview clinic. The Center Moriches location offers injectables, regenerative aesthetics, medical weight loss, peptide therapy, IV therapy, and NAD+.
Three things set Stay Ageless Clinic apart: Farina Sial's 25 years of hospital medicine, regenerative and laser capabilities beyond what most Long Island clinics offer, and a patient experience rooted in natural results and honest, non-pressured consultations.
Yes. We have made the safety and effectiveness of treatments for darker skin types - Fitzpatrick IV-VI - a clinical priority. The Candela GentleMax Pro's Nd:YAG 1064nm wavelength is specifically designed for safe treatment in darker skin, and all settings are individually calibrated per patient.
You can book online at stayageless.net, call 516-924-4153, or email info@stayageless.net. We confirm within one business day. Clinic hours: Tuesday and Thursday 10am-5pm | Saturday 12pm-5pm | Monday, Wednesday, and Friday by appointment.