This article aims to share our experience of using intense pulsed light (IPL) technology safely and effectively in our clinic. We aimed to provide valuable insights for other cosmetic practitioners interested in incorporating IPL technology into their practices. In this article, we elaborate on the various challenges faced while using IPL technology, such as ensuring the safety of clients and educating them on proper aftercare. We will explain the precautions taken, such as conducting a thorough consultation and patch testing, to mitigate the risk of adverse side effects. We also describe several interesting cases where IPL was used to treat post-inflammatory hyperpigmentation of different origins. We also explain how we tailor our treatments to suit individual clients’ needs and provide them with detailed instructions on how to care for their skin after treatment. In conclusion, IPL technology is a safe and effective way to treat various cosmetic concerns and improve the overall appearance of the skin. With proper safety measures and tailored treatments, we hope that our experience and insights will be valuable to other cosmetic practitioners.

Laser and light therapies have revolutionized the field of cosmetic medicine because of their ability to treat a range of dermatological conditions safely and effectively. However, the theoretical principles underlying these modalities have often been overlooked. To explore the key principles of quantum mechanics and physics involved in laser and light therapy. We, a team of doctors who are quantum mechanics enthusiasts, discuss the concept of wave particle duality, wherein a photon can exist in two states simultaneously, allowing for its emission and absorption during laser and light therapy. Moreover, we examined the concepts of the Pauli exclusion principle, superposition, emission mechanism, and different reactions from the absorption of light energy by skin tissue. Although these concepts are not taught in medical schools, it would be interesting to understand them. Understanding the principles of quantum mechanics and physics is vital for optimizing the clinical outcomes of laser and light therapy. Combining these fundamental principles with empirical observations and clinical experience can enhance the efficacy and safety of laser- and lightbased cosmetic interventions and pave the way for further advancements in this field.

This article explores the clinical manifestations, diagnostic processes, and management strategies for Mycobacterium abscessus infections following mesotherapy and includes a literature review on M. abscessus incidence, diagnostic challenges, and therapeutic difficulties. A woman who presented to our clinic with redness and swelling across multiple sites 3 months following mesotherapy in a beauty shop was ultimately diagnosed with M. abscessus-induced skin and soft tissue infection (SSTI). Concurrently, Hong Kong’s Department of Health reported 19 similar cases, all linked to mesotherapy sessions at a particular beauty center from June to August 2023. Diagnosis involved analyzing pus samples, including acid-fast bacilli smear and culture. A literature review was conducted on M. abscessus infections, causality, treatment strategies, antibiotic susceptibility tests, advanced diagnostics such as polymerase chain reaction and matrix-assisted laser desorption ionization time-of-flight mass spectrometry, and newer treatment modalities. Nineteen patients exhibited SSTIs that manifested as rashes and abscesses at the injection sites. Diagnosis is hindered by the slow growth of M. abscessus, which necessitates advanced testing. Our patient underwent 2 to 3 months of intravenous antibiotics (combination therapy) as an inpatient at a public hospital, together with repeated surgical curettage and drainage of the infected areas. This report highlights the surge in M. abscessus infections related to cosmetic procedures and the immediate requirement for stringent infection control measures in aesthetic practices. The M. abscessus outbreak emphasizes its emergence as a significant pathogen, the intricacies of managing its antibiotic resistance and biofilm production, and the need for a comprehensive treatment approach that incorporates personalized medicine, innovative therapeutics, and surgical interventions. The literature review underscores the importance of continuous research on strain-specific treatments, development of advanced diagnostic and therapeutic techniques to effectively tackle this antibiotic-resistant pathogen, and infection control.