Manufacturing Process of Hyaluronic Acid Dermal Fillers.

Hyaluronic acid (HA) fillers are extensively utilized in aesthetic medicine due to their biocompatibility, reversibility, and effectiveness in enhancing skin hydration, volume, and overall appearance. These fillers are predominantly produced through microbial fermentation, followed by a critical cross-linking process that enhances their longevity by resisting enzymatic degradation. This review provides a thorough examination of the manufacturing processes that differentiate HA fillers, with particular attention to the distinctions between biphasic and monophasic variants. Unlike previous studies, this review emphasizes the specific cross-linking techniques and their substantial impact on the fillers' rheological properties, such as elasticity and cohesiveness, which are crucial to their clinical performance and patient outcomes. Additionally, the review offers a comprehensive comparison of HA fillers with non-HA alternatives, including calcium hydroxylapatite, poly-l-lactic acid, and polymethyl methacrylate, highlighting the unique advantages and potential complications associated with each type. By presenting novel insights into the latest advancements and challenges in filler technology, this review aims to provide clinicians with a deeper understanding of filler properties, thereby guiding them in making informed decisions to optimize patient safety and aesthetic results.

The Hybrid Filler Technique: A 5-Year Retrospective Analysis.

BACKGROUND: The combination of calcium hydroxylapatite (CaHA) and hyaluronic acid fillers (CPM-HA, cohesive polydensified matrix-based hyaluronic acid fillers, Belotero® range, Merz Pharmaceuticals GmbH, Frankfurt, Germany), known as hybrid fillers, has emerged as a popular approach in aesthetic medicine. Premixed CaHA with CPM-HA offers several advantages, including enhanced tissue elevation and reduced early volume loss after injection. OBJECTIVE: The objective of the present study is to assess the safety of premixing CaHA and CPM-HA fillers for rejuvenation purposes or as an aesthetic harmonization treatment. METHODS: This retrospective study presents the clinical experience of two expert injectors who consistently used premixed CaHA and CPM-HA fillers for aesthetic treatments between March 2018 and December 2023. The premixed hybrid formulation was standardized and administered following a published protocol. A total of 2112 patients were treated, with meticulous follow-up over a minimum of one year. RESULTS: In the 2112 patients treated, only 5 minor adverse events (0.24%) were reported. The adverse events consisted of 4 non-inflammatory nodules of which 2 completely resolved with hyaluronidase, and 1 case of transient edema. Secondary findings consist of the treated areas, type of CPM-HA used and mixing ratios that were applied. CONCLUSION: The results from the current retrospective study, with the largest published cohort so far, are consistent with prior publications and strongly support a good safety profile of the CaHA:CPM-HA hybrid blend. LEVEL OF EVIDENCE III: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Dermatological Health in the Light of Skin Microbiome Evolution.

BACKGROUND: The complex ecosystem of the skin microbiome is essential for skin health by acting as a primary defense against infections, regulating immune responses, and maintaining barrier integrity. This literature review aims to consolidate existing information on the skin microbiome, focusing on its composition, functionality, importance, and its impact on skin aging. METHODS: An exhaustive exploration of scholarly literature was performed utilizing electronic databases including PubMed, Google Scholar, and ResearchGate, focusing on studies published between 2011 and 2024. Keywords included "skin microbiome," "skin microbiota," and "aging skin." Studies involving human subjects that focused on the skin microbiome's relationship with skin health were included. Out of 100 initially identified studies, 70 met the inclusion criteria and were reviewed. RESULTS: Studies showed that aging is associated with a reduction in the variety of microorganisms of the skin microbiome, leading to an increased susceptibility to skin conditions. Consequently, this underlines the interest in bacteriotherapy, mainly topical probiotics, to reinforce the skin microbiome in older adults, suggesting improvements in skin health and a reduction in age-related skin conditions. Further exploration is needed into the microbiome's role in skin health and the development of innovative, microbe-based skincare products. Biotherapeutic approaches, including the use of phages, endolysins, probiotics, prebiotics, postbiotics, and microbiome transplantation, can restore balance and enhance skin health. This article also addresses regulatory standards in the EU and the USA that ensure the safety and effectiveness of microbial skincare products. CONCLUSION: This review underscores the need to advance research on the skin microbiome's role in cosmetic enhancements and tailored skincare solutions, highlighting a great interest in leveraging microbial communities for dermatological benefits.

Navigating Laser Treatments for Scars: The Physical and Emotional Journey.

INTRODUCTION: The physical and emotional burden that scars impose on people's lives has been the concern of dermatological research for quite some time. Usually, the available literature on the topic draws a grim image containing solely dry medical facts. The present study deviates from this approach by reflecting a solution-centered study which has also touched on the quotidian life of an average person. The overall intention of the present experiment was to inspect how a holistic approach to scars in dermatology can be crucial for the patient's quality of life. METHODS: This pilot study compiles data collected through the Patient and Observer Scar Assessment Scale (POSAS) and the Dermatology Life Quality Index (DLQI) from the same set of patients within the span of a year. Sixty patients with diverse scar profiles were asked to rate POSAS and DLQI in every session. A combination of EBDs was used based on the scar examination. Student's t-test was run to validate the data. RESULTS: The evaluations by POSAS and DLQI indicate significant improvement in the physical aspect of the scar as well as the patient quality of life a year after the first treatment. According to mean values collected from POSAS, there is a direct correlation between average patient evaluations and physician assessments. Thus, EBDs prove to be efficient in improving the QoL of scar patient. The 20 patients who had reported mild side effects after treatments recovered fully within a few days after the sessions. No patient reported severe side effects. DISCUSSION: Apart from the physical indications that scars bring about into patients' lives, the psychological repercussions caused by scars have a major effect on the QoL of the patients. These repercussions can be divided into individual and social. At the individual level, scars have a profoundly negative effect on the image of the self which leads to several different psychological complications by time. At the social level, scars affect the radius of physical movement besides the quality of the patient's activities. Therefore, EBDs as effective treatment methods can improve itchiness, pain, and so forth, of the patient, and can also improve the psychological aspect. CONCLUSION: All in all, the present study aims to produce a more panoramic perspective on the concern of scars in the field of dermatology, centering around EBDs as a solution for improving scar patient QoL. With a focus on the efficacy of EBDs in the scar treatment, and with reference to studies on the topic, it is safe to assume that the earlier the scar treatment initiates, the better the outcomes. Departing from this point, in the future of cosmetic dermatology, prepping the skin by EBD treatments before surgery is imaginable.

Advancements in laser technologies for skin rejuvenation: A comprehensive review of efficacy and safety.

INTRODUCTION: Laser technology has fundamentally transformed the landscape of dermatology, offering nuanced solutions for skin rejuvenation and resurfacing. This paper aims to explore the spectrum of laser technologies, from ablative to non-ablative and fractional lasers, their mechanisms, benefits, and tailored applications for diverse skin conditions. As we delve into the intricacies of each technology, we also consider the scientific advancements that have made these treatments safer and more effective, promising a new horizon in skin rejuvenation. OBJECTIVE: This comprehensive analysis seeks to evaluate recent advancements in laser technology for skin rejuvenation, focusing on efficacy, safety, and patient satisfaction. METHODS: The selection criteria for studies in this publication focused on recent, peer-reviewed articles from the last 20 years, emphasizing advancements in laser technologies for skin rejuvenation. Our comprehensive review involved searches in PubMed, Cochrane, Scopus and Google Scholar using keywords like "skin rejuvenation," "laser technology," "efficacy," "safety," and "dermatology." This approach focused on inclusion of recent research and perspectives on the efficacy and safety of laser treatments in the field of dermatology. RESULTS: Our literature review reveals advancements in laser skin resurfacing technologies, notably fractional lasers for minimal downtime rejuvenation, ablative lasers for precise tissue vaporization, and non-ablative lasers for coagulation effect promoting collagen with reduced recovery. Hybrid and picosecond lasers are highlighted for their versatility and effectiveness in addressing a wide array of skin concerns. The findings also emphasize the development of safer treatment protocols for ethnic skin, significantly reducing risks like hyperpigmentation and scarring, thus broadening the scope of effective dermatological solutions. CONCLUSION: This extensive review of advancements in laser technologies for skin rejuvenation underscores a remarkable evolution in dermatological treatments, offering an expansive overview of the efficacy, safety, and patient satisfaction associated with these interventions. Furthermore, the exploration of combination treatments and laser-assisted drug delivery represents a frontier in dermatological practice, offering synergistic effects that could amplify the therapeutic benefits of laser treatments.

Hyaluronan Hybrid Cooperative Complexes Injection as a Biostimulation for Postobese Skin Laxity in the Arm: A Histopathologic Study.

Background: The Hybrid Cooperative Complexes of high and low molecular weight hyaluronic acids (HHCC) improve skin structure and bioactivity. Massive weight loss damages cellular composition and morphological structure of skin. An injective treatment of postobese skin consisting of HHCC may have a role in counteracting these histopathological alterations. Objectives: To analyze the histological effects of HHCC injection in the cutaneous tissues of massive weight loss patients suffering from arm laxity. Methods: Nine ex-obese patients with postweight-loss-related arm laxity and ptosis requiring brachioplasty were prospectively recruited at the first author's department. HHCC injection was performed on only 1 arm, which included 2 injective sessions separated by 30 days. One month posttreatment, patients underwent a bilateral brachioplasty, and the surgical specimens were histologically examined, searching for any variation in the cutaneous connective tissue following injections. Histology on treated specimens showed a statistically significant increased density of elastic fibers along with a lower fragmentation of the same fibers compared to the untreated tissue. Fibroblasts demonstrated a swollen appearance as if involved in a bioactivation process. Results: Treatment with HHCC increases the number of elastin fibers and determines a more regular elastin deposition and architecture, as well as the bioactivation of fibroblasts. The contralateral untreated area showed an irregular structure with elastosis and elastolysis. Conclusions: More studies are necessary, but histologically proven benefits are demonstrated in the HHCC-treated skins when compared with basal controlateral skin. These data support the use of HHCC formulations for the treatment of postobese skin laxity.

Educational strategies to combat harmful cosmetic dermatology trends in Generations Alpha and Z.

This contribution argues in favor of implementing comprehensive educational strategies to combat the harmful effects of social media (SM) on body image and self-perception among Generations Alpha and Z. These generations are often exposed to unattainable beauty standards that can lead to distorted self-perceptions and body image disorders such as Zoom dysmorphia. To address this issue, we propose embedding health education, critical media literacy, and active parental involvement in educational curricula. The goal is to help young individuals develop the skills necessary to critically evaluate and navigate the pressures of SM. We believe that incorporating health education, critical media literacy, and active parental engagement into school programs is urgently needed to counteract the adverse effects of SM on body image and self-perception. These initiatives will equip young people with the necessary tools to evaluate SM content critically, navigate SM influences more safely and effectively, and develop a more resilient and informed perspective. This proactive educational approach is vital for improving mental health outcomes and mitigating the psychologic impacts of digital media. We hope that this comprehensive strategy will ultimately help future generations face SM pressures with confidence and critical awareness.

Exploring the landscape of AI adoption in cosmetic medicine and surgery: Insights from the 25th IMCAS Congress (International Master Course in Aging Science).

INTRODUCTION: The integration of artificial intelligence (AI) into cosmetic medicine promises to revolutionize the field by enhancing diagnosis, treatment planning, and patient care. OBJECTIVE: This manuscript explores the current adoption and perceptions of AI among professionals in the realm of cosmetic dermatology and plastic surgery, utilizing insights from the IMCAS Congress 2024 attendees. METHODS: A survey employing a digital questionnaire with 14 questions was distributed among attendees of the IMCAS Congress 2024 to evaluate their familiarity with AI, usage in clinical practice, perceived advantages, and concerns regarding data privacy and security. RESULTS: The survey revealed that a majority of respondents are familiar with AI's potential in cosmetic medicine, yet there is a notable discrepancy between awareness and actual application in practice. Concerns over data privacy and a pronounced need for further training were also highlighted. CONCLUSION: Despite recognizing AI's benefits in cosmetic medicine, significant barriers such as data privacy concerns and the need for more comprehensive training resources must be addressed. Enhancing education on AI-applications and developing strategies to mitigate privacy risks are imperative for leveraging AI's full potential in improving patient care and outcome in cosmetic medicine.

The relevance and accuracy of an AI algorithm-based descriptor on 23 facial attributes in a diverse female US population.

BACKGROUND: The response of AI in situations that mimic real life scenarios is poorly explored in populations of high diversity. OBJECTIVE: To assess the accuracy and validate the relevance of an automated, algorithm-based analysis geared toward facial attributes devoted to the adornment routines of women. METHODS: In a cross-sectional study, two diversified groups presenting similar distributions such as age, ancestry, skin phototype, and geographical location was created from the selfie images of 1041 female in a US population. 521 images were analyzed as part of a new training dataset aimed to improve the original algorithm and 520 were aimed to validate the performance of the AI. From a total 23 facial attributes (16 continuous and 7 categorical), all images were analyzed by 24 make-up experts and by the automated descriptor tool. RESULTS: For all facial attributes, the new and the original automated tool both surpassed the grading of the experts on a diverse population of women. For the 16 continuous attributes, the gradings obtained by the new system strongly correlated with the assessment made by make-up experts (r ≥ 0.80; p < 0.0001) and supported by a low error rate. For the seven categorical attributes, the overall accuracy of the AI-facial descriptor was improved via enrichment of the training dataset. However, some weaker performance in spotting specific facial attributes were noted. CONCLUSION: In conclusion, the AI-automatic facial descriptor tool was deemed accurate for analysis of facial attributes for diverse women although some skin complexion, eye color, and hair features required some further finetuning.

Picosecond lasers in cosmetic dermatology: where are we now? An overview of types and indications.

Q-switched lasers have undeniably revolutionized the field of laser dermatology since four decades ago. Just as the first-generation laser emits its photonic signal in a few nanoseconds, the picosecond laser delivers pulse widths of at least ten times shorter. These devices offer a powerful tool for treating a wide range of skin conditions with a minimal downtime for visible improvement. For the current study, a literature research was performed on the dermatological applications of picosecond laser. The literature searched on this topic between 1999 and 2023 accessible through various platforms produce a result of 62 articles. The included studies have discussed the application of picosecond laser technology in tattoo removal, treatment of epidermal and dermal pigmentation, and collagen remodeling. After sifting the data from the articles into tables, the results were discussed in detail. The study shows a lot of evidence towards the efficacy of picosecond laser, yet it draws attention to its downsides.

Cross-cultural perspectives on patient expectations in cosmetic dermatology: A comparative analysis across countries and ethnicities.

Patient expectations in cosmetic dermatology exhibit significant variations across countries, cultures, and ethnicities, thereby reflecting individual desires, concerns, and goals. While some individuals seek aesthetic enhancements, others prioritize addressing specific skin conditions within the context of beauty norms in their respective countries. The provision of personalized and culturally sensitive care plays a crucial role in meeting these diverse expectations. Skin characteristics and concerns differ among ethnicities, influencing treatment preferences. For instance, individuals with darker skin tones may prioritize the treatment of pigmentation disorders, whereas those with lighter skin tones may focus on achieving a fair complexion. Furthermore, differences in facial anatomy among various ethnicities necessitate tailored treatment approaches. This commentary aims to contribute to the effective understanding and management of patient expectations, ultimately leading to satisfactory outcomes. Additional research and regional studies are required to further deepen our understanding of patient expectations in cosmetic dermatology and enable the delivery of improved and culturally appropriate care on a global scale.

The growing importance of ultrasonography in cosmetic dermatology: An update after the 23rd IMCAS Annual World Congress (2022).

BACKGROUND: Ultrasound (US) has been used for many years in the field of medicine. Many specialties have embraced US as a quick, painless, and relatively inexpensive tool to assist the clinician in determining anatomy, pathology, and aid in diagnostic or therapeutic procedures. US allows for precise mapping of cutaneous and subcutaneous structures in the face, in particular vascular structures. The use of US leads to reduced chances of complications and clinical failures, rendering more safety and high quality. METHODS: US is considered the first-imaging technique for dealing with fillers and managing their potential complications. US can be deployed for vascular mapping, safe placement of fillers, and directed low-dose hyaluronidase reversal of vascular adverse events. It is a noninvasive imaging modality that provides a good definition for studying the skin, deeper layers, and blood flow in real time. In other words, we go from static to dynamic anatomy. In addition, US can guide with the application of botulinum toxin, in order to define the muscular planes. US may contribute to a more personalized procedure, better cosmetic results, and help to avoid complications. In general, physicians tend to use it for prevention. Last, for research purposes, US examination provides valuable information on the behavior, longevity, and interaction of the filler within the tissues. CONCLUSION: This new approach for US-guided treatments is a very practical and an effective method in cosmetic dermatology. As doctors, we owe it to our patients to do our best to prevent any harm. We feel that in near future, US will be an essential diagnostic tool in any dermatology or cosmetic doctor's office to both ensure safety and provide legal protection for the professional.