Boost your collagen at any age, innovative skin tightening treatments and devices, Forma, Body Fx, Morpheus, Collagenizer, Dermoelectroporation, Morpheus Microneedling, hydrafacial, laser, lumecca IPL, Diolaze Hair removal, evolve tite, trim, tone

The Collagen BAR

Did you know...
Aging and menopause cause loss of estrogen.
Loss of estrogen results in loss of collagen.
Loss of collagen causes sagging skin, dryness,

fine lines and wrinkles.

Our skin program at The Collagen Bar
is designed to personally give your skin
a tighter, smoother and longer lasting youthful
appearance using a unique combination of

D More™M Collagen Infusion Therapy
Forma™M Radiofrequency +

Morpheus 8™ Microneedling Therapy

Lumecca IPL

Evolve Trim Tite Tone

Body FX

Zero Body Dry Float

IV Vitamin Therapy

NAD+ Vitamin Therapy

IV Exosomes

PRP - PRF Therapy

Botox - Injectables

Hormone Optimization

Hair Restoration

Shock Wave Therapy


PRF Breast Lift

Nutrition Consultation

Acupuncture - Cupping

Reiki Lymphatic Massage

Transformative Wellness


Diana Seo is the founder and president of The Collagen Bar, a medical aesthetic and skincare clinic, with locations in Greenwich, CT and NYC.

Diana has over fifteen years of combined experience in the health, medical and beauty fields. She started her career as a researcher/technologist in the Cytogenetics Department at Mount Sinai Hospital in NYC. She then enhanced her understanding of skin aesthetics working for one of the most notable plastic surgeons in the world, Dr. Charles Thorne, the editor-in-chief of the “Grabb and Smith’s Plastic Surgery” textbook.

Diana received her aesthetician license and ITEC (International Therapy Examination Council) certification from the Atelier Esthétique Institute of Esthetics. Her Skin Specialist and Facial Electrical diplomas are recognized in over thirty-nine countries. She graduated from the University of Connecticut with a B.S. in Biophysics and minor in Chemistry and Mathematics.

Her strategy to skincare combines both Eastern and Western teachings. She contributes her holistic approach to her interests, which includes Ayurveda, yoga, reiki and acupuncture. She firmly practices and preaches that balance is key to a healthy life. She believes that “Your body systems work together, therefore, they are interdependent of each other. Visible signs of aging are inevitable, but can be slowed dramatically with proper care. “

Her motto is ‘I rather prevent than cure’ and her goal for her clients is to love themselves & their skin no matter what their age. 

Dr Alcarez

 is a Manhattan-based, Internal Medicine Physician and has a combined 14 years of experience and specialized training in Aesthetic Medicine, Obesity Medicine, and Preventative Medicine. She is the founder and Medical Director of Aesthete Medical Wellness and Medspa.

Dr. Alcarez received her medical degree at the University of New England College of Osteopathic Medicine in Maine, and completed her residency in Internal Medicine at Lenox Hill Hospital. She is affiliated with Mount Sinai Beth Israel and NYU Langone Medical Center.

Using a holistic and evidence-based approach to medicine, Dr. Alcarez seeks to ensure that her patients receive the best medical care to maintain long-term health and wellness. She considers physical, mental, and aesthetic health as integral to patients’ overall wellbeing. For this reason, Dr. Alcarez offers comprehensive aesthetic consultations that include botox for medical purposes like migraines and hyperhidrosis, botox and fillers for anti-aging, radiofrequency skin tightening (Inmode Optimas) and radiofrequency body contouring (Inmode Contoura and Cutera’s Trusculpt ID offered at the downtown location).

Collagen Bar, Premier Skin Clinic and Medical Spa located in Manhattan, New York City area & Greenwich, CT. Offers FDA Cleared non invasive face and body treatment, skin tightening, botox, fillers, skincare products, medical grade collagen, morpheus, IPL.


Jonathan Hilton Sherwyn, M.D., F.A.C.S. is certified by the American Board of Plastic Surgery - the only board recognized by the American Board of Medical Specialties to certify plastic surgeons.

Dr. Sherwyn is a graduate of Colgate University and the University of Health Sciences/The Chicago Medical School. He obtained his general surgery training at the Lenox Hill Hospital, New York and then attended the SUNY Downstate Medical Center, New York for his training in plastic surgery. Dr. Sherwyn furthered his education as a Fellow both at the Thomas Jefferson University Hospital in Philadelphia and in Miami, where he trained with several of the world's most outstanding physicians and surgeons. He has undertaken preceptorships at the Emory Clinic in Atlanta and the Vanderbilt University in Nashville, similarly with leaders in the field of plastic surgery. Presently he is an attending plastic surgeon at the Lenox Hill Hospital and the Manhattan Eye, Ear and Throat Hospital in New York and Greenwich Hospital in Connecticut. Additionally, his office maintains an on-site surgical suite that is fully accredited.

Dr. Sherwyn is an active member of the American Society of Plastic Surgeons. Additional society memberships include the American Medical Association, the American Society of Aesthetic Plastic Surgery, the New York Regional Society of Plastic and Reconstructive Surgery and the Northeastern Society of Plastic Surgeons. He is a Fellow of the American College of Surgeons. Dr. Sherwyn has been appointed as Affiliate Faculty of the College of Health Professions of Sacred Heart University in Fairfield, Connecticut.

Initial consultations are conducted with Dr. Sherwyn himself, not delegated to an assistant, for approximately one and one half hours in order to ensure a thorough discussion of each individual's desires, needs and goals. A copy of the doctor's notes is provided together with printed materials pertinent to the visit. Second, or follow-up, consultations and preoperative consultations are offered gratis. All aftercare is similarly personally performed by Dr. Sherwyn.