Fractional Micro-Coring for Weight Loss Laxity

Significant weight loss, whether achieved through lifestyle modification, surgery, or pharmacologic therapy, results in measurable alterations in skin structure and mechanical integrity.^1,2 Although reduction in adipose tissue improves metabolic health, rapid volume loss creates dermal laxity, soft tissue descent, and skin redundancy. These changes are particularly evident in the midface, jawline, neck, abdomen, upper arms, and knees, where intrinsic elasticity may be insufficient to accommodate reduced underlying support.

The widespread adoption of glucagon-like peptide 1 receptor agonists (GLP-1 RAs) has accelerated the number of patients experiencing substantial and often rapid weight reduction.³ Emerging colloquial terms such as “Ozempic face” and “Ozempic Body” reflect increasing patient awareness of facial deflation, jawline softening, and body skin laxity associated with pharmacologically mediated weight loss. Historically, surgical excision has been the definitive option for true excess skin removal. Figure 1 presents a typical example of improved lower face and perioral skin laxity 30 days following a single treatment of fractional micro-coring technology (ellacor®, Cytrellis Biosystems, Inc.).

Fig 1. Lower face and perioral treatment at baseline and 30 days post-treatment. 

With oral GLP-1 RA formulations and expanded therapeutic indications entering the market, this patient population is expected to increase, positioning post-weight loss skin management as a defining aesthetic focus in 2026 and beyond.⁴

MANAGING POST-WEIGHT LOSS SKIN LAXITY: A NOVEL APPROACH
As aesthetic medicine evolves toward concepts of pre-rejuvenation and pre-aging, early structural preservation is gaining momentum over correction alone. This paradigm aligns with broader patient-centered themes of longevity, health optimization, and wellness-centered care. Within this framework, technologies such as micro-coring represent a novel approach by utilizing fractional mechanical excision of micro-columns of skin to reduce surface area and stimulate collagen remodeling without the use of energy.⁵

Fractional micro-coring represents a distinct and innovative advancement in fractional skin resurfacing. Rather than relying on energy to create microthermal zones of ablation and/or coagulation, this technology utilizes precise mechanical excision of full-thickness micro-columns of skin, directly reducing surface area while triggering dermal remodeling. This dual mechanism of action is especially relevant in patients with rapid weight loss who develop redundant skin that is also collagen deficient. Additionally, the recently expanded US Food and Drug Administration (FDA) clearance for fractional skin resurfacing extends micro-coring use beyond the face, broadening its application for effective body treatments.6 Clinically meaningful improvement in abdominal and flank skin laxity following GLP-1 RA use in a 56-year-old female patient with Fitzpatrick skin type IV 60 days following a single treatment is shown in Figure 2.

Fig 2. Abdomen and flank treatment outcomes at baseline and 60 days post-treatment, correcting a dog ear from prior abdominoplasty, with significant reduction in skin laxity and stretch marks following a single session. 

TREATMENT TECHNIQUE AND POST-PROCEDURE CONSIDERATIONS
Following patient selection, vector assessment, marking, and local anesthesia, treatment is performed with the handpiece positioned perpendicular to the skin to ensure a complete vacuum seal without excessive pressure. The clinician moves methodically through the treatment zone in a slow, steady manner, treating approximately 1 spot per second. This pace creates an optimized vacuum seal that produces more consistent and uniform full-thickness micro-column excisions. A single needle cartridge can remove 18,000 micro-cores of skin, enabling precise and quantifiable surface-area reduction.

Through density selection, pattern alignment, and optimized technique, fractional micro-coring achieves immediate surface-area reduction while initiating a dermal remodeling cascade that supports longer-term improvement in skin laxity via neocollagenesis and neoelastogenesis in as little as a single treatment.⁷

Clinical and social downtime for face and neck treatments is typically 4-7 days. In contrast, when treating the body, normal activity can be resumed quickly as any visible signs of treatment can be easily covered with clothing. Patients are offered vascular laser treatment 1 week post-procedure and can use optional exosome- and peptide-based skincare to enhance recovery and results. Figure 3 showcases baseline laxity following GLP-1 RA use in a 52-year-old female patient with Fitzpatrick skin type IV followed by early healing at 7 days, and improved skin texture 60 days following a single abdominal treatment.

Fig 3. A patient's abdomen at baseline, 7 days, and 60 days following a single treatment session. Transient post-treatment erythema is visible at 7 days and typically resolves within the first 60 days for body treatments. 

THE FUTURE OF MANAGING SKIN LAXITY
As combination strategies continue to evolve, pairing fractional micro-coring of the skin with technologies aimed at preserving or enhancing muscle mass represents a comprehensive approach to post-weight loss rejuvenation. In the context of longevity- and wellness-focused aesthetics, defining the role of fractional micro-coring in maintaining skin quality across the face and body is increasingly important.

As aesthetic medicine continues to evolve toward inclusive precision-based skin remodeling, technologies that safely address skin laxity without thermal injury are gaining attention, especially when it comes to enabling inclusive aesthetic options for all skin types. Fractional micro-coring is the only technology available that both removes excess skin and triggers dermal remodeling without thermal injury, putting it in a class of its own for weight loss patients looking to safely improve overall skin quality without surgery or extended recovery time. 

Disclosure: Dr. Moradzadeh is a key opinion leader and medical advisory board member for Cytrellis. He reported no relevant financial interests for this article.

1. Paschou IA, Sali E, Paschou SA, et al. GLP-1RA and the possible skin aging. Endocrine. 2025;89(3):680-685. https://doi.org/10.1007/s12020-025-04293-w

2. Jafar AB, Jacob J, Kao WK, Ho T. Soft tissue facial changes following massive weight loss secondary to medical and surgical bariatric interventions: a systematic review. Aesthet Surg J Open Forum. 2024;6:ojae069. Published August 22, 2024. https://doi.org/10.1093/asjof/ojae069

3. Wilding JPH, Batterham RL, Calanna S, et al. Once-weekly semaglutide in adults with overweight or obesity. N Engl J Med. 2021;384(11):989-1002. https://doi.org/10.1056/NEJMoa2032183

4. Davies M, Pieber TR, Hartoft-Nielsen ML, et al. Effect of oral semaglutide compared with placebo and subcutaneous semaglutide on glycemic control in patients with type 2 diabetes. JAMA. 2017;318(15):1460-1470. https://doi.org/10.1001/jama.2017.14752

5. Gfrerer L, Kilmer SL, Waibel JS, Geronemus RG, Biesman BS. Dermal micro-coring for the treatment of moderate to severe facial wrinkles. Plast Reconstr Surg Glob Open. 2022;10(10):e4547. Published October 17, 2022. https://doi.org/10.1097/GOX.0000000000004547

6. US Food and Drug Administration. 510(k) Premarket Notification: ellacor® Micro-Coring Device (K252752). US Food and Drug Administration. 2025. Accessed January 2026. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm?ID=K252752

7. Bhatia AC, Napekoski K, Edgecombe J, Weir D, Winkle R, Rohrich R. Histologic study of abdominal skin treated with mechanical dermal micro-coring technology for minimally invasive skin removal. J Cosmet Dermatol. 2025;24(7):e70323. https://doi.org/10.1111/jocd.7032