Shows
Lasers in SkinThermal Relaxation Time, Thermal Diffusion Time & More!In this episode, Lisa and Mike discuss the concept of thermal relaxation time (TRT) and its relevance in laser treatments. They explore the historical context of TRT, tracing its origins back to discussions between physicist Dr. John Parrish and dermatologist Dr. Rox Anderson in the 1980s. The conversation highlights the importance of understanding how heat affects blood vessels and hair follicles during laser procedures. Lisa and Mike also introduce the concept of thermal diffusion time (TDT) and emphasise that the key to effective treatments lies in the denaturation time of stem cells, rather than solely focusing on TRT or...
2025-08-1431 min
Lasers in SkinRegulations, Training & VTCTIn this episode, Lisa and Mike discuss their recent experience as a VTCT approved training academy, focusing on their first cohort of students completing the Level 4 Certificate in Laser and Light Treatments. They share insights on the assessment process, highlighting the challenges and peculiarities of the VTCT regulations, particularly regarding hygiene practices and the emphasis on gloves. They also touch on the current state of proposed regulations for the aesthetic industry in Scotland, the implications for both medical and non-medical practitioners, and the importance of proper training.
KEY TAKEAWAYS
The VTCT process emphasised minor details...
2025-08-0727 min
Lasers in SkinTechnical Questions We Often GetIn today's episode of Lasers In Skin, your favourite laser-loving duo, Lisa and Mike, tackle some of the most burning (but not literally!) questions from listeners about laser technology. From dialling in the perfect calibration to decoding the mysteries of fluence and spot size, they break it all down with their signature mix of wit and wisdom. You'll also hear about the best wavelengths for zapping melanin and targeting haemoglobin like a pro.
KEY TAKEAWAYS
The numbers displayed on laser machines, such as millijoules, often do not accurately represent the actual energy output. Proper calibration...
2025-07-3134 min
Lasers in SkinMike Reacts To Social Media AdviceToday, Mike and Lisa take to the internet to fact-check some of the more questionable laser advice being dished out across the internet. They address a variety of topics, including the effectiveness of different laser technologies, ideas about cooling the skin during treatments, and the potential pitfalls of taking bad advice.
KEY TAKEAWAYS
Cooling the skin is essential for reducing pain during laser hair removal treatments. Techniques such as using ice packs or air coolers are recommended over numbing creams, which may mask pain but do not address the underlying thermal damage.
There...
2025-07-2423 min
Lasers in SkinWatch Your Language!In this episode, Lisa and Mike delve into the complexities of language as it pertains to the field of laser hair removal and skin treatments. They discuss the term "paradoxical hypertrichosis," exploring its definitions and the potential for misinterpretation within the industry. They highlight the importance of precise language when discussing hair growth, treatment effects, and the various parameters involved in laser technology. They also touch on the significance of understanding skin tone versus skin type, emphasising how clarity in terminology can enhance communication and improve treatment outcomes.
KEY TAKEAWAYS
Clear and precise language is...
2025-07-1732 min
Lasers in SkinWhat's Important About Continuous Training?In this episode, Lisa and Mike discuss the critical topic of continuous training in the laser and aesthetic industry. They take a look at some alarming stories of clinics potentially providing inadequate training to technicians, leading to poor treatment outcomes for clients, particularly in laser hair removal. They highlight the importance of reputable training and the need for practitioners to understand the science behind their work, and also touch on various qualifications, including VTCT and ITEC, and emphasize the significance of ongoing professional development to ensure safety and efficacy in treatments.
KEY TAKEAWAYS
Continuous training...
2025-07-1033 min
Lasers in SkinELI5 - LaserIn this episode, Mike and Lisa return to their Explain Like I'm 5 series to explore the origins of lasers. Starting from Einstein's concept of stimulated emission in 1917 to the creation of the first laser by Theodore Maiman in 1960, Mike and Lisa break down complex concepts such as monochromaticity, coherence, and non-divergence, making them accessible to listeners of all ages. They discuss the mechanics of how lasers work, including the roles of gain mediums, mirrors, and the process of stimulated emission.
KEY TAKEAWAYS
Lasers operate based on the principle of stimulated emission of photons, a concept...
2025-07-0336 minLasers in SkinLaser Tattoo Removal - 'Mythconceptions'In today's episode, Mike and Lisa discuss the physics and biology behind the process, explaining how lasers interact with tattoo ink to create steam bubbles that facilitate ink removal. Mike shares his extensive experience in the field, dating back to 1986, and clarifies common misconceptions about tattoo removal technologies, including the differences between Q-switched and picosecond lasers. The episode also addresses myths surrounding frosting, the significance of sound during treatments, and the challenges of removing various ink colours.
KEY TAKEAWAYS
The process involves using lasers to heat tattoo ink particles rapidly, causing them to absorb energy...
2025-06-2629 minLasers in SkinChilling Out: The Science Behind Skin Cooling in Laser TreatmentsIn this episode, Lisa and Mike delve into the topic of skin cooling, particularly concerning laser and IPL treatments. Lisa and Mike discuss the science behind skin temperature, pain receptors, and the importance of cooling the skin before and after procedures to minimise discomfort and prevent thermal damage. Mike explains how cooling can significantly reduce pain perception and protect collagen, while also addressing common misconceptions about skin cooling methods.
KEY TAKEAWAYS
Skin cooling is essential during laser and IPL treatments to reduce pain and protect the skin from thermal damage. Cooling the...
2025-06-1926 min
Lasers in SkinAn interview with Claire Louise-HutchinsonJoin Lisa and Mike as they interview the vibrant Claire Louise, a laser technician from Ilminster, Somerset. The trio dives into Claire's journey from a 23-year career in pharmaceuticals to becoming a successful laser practitioner, highlighting the challenges she faced with inadequate training and the pivotal moment that led her to seek guidance from Mike. Claire shares her experiences with laser hair removal and tattoo removal, emphasising the importance of authenticity in the beauty industry and the supportive community they've built together. KEY TAKEAWAYS Being genuine and authentic is crucial in building trust with clients...
2025-06-1239 min
Lasers in SkinDoes UV Absorption Really Matter with Lasers/IPLIn this episode, Lisa and Mike Murphy delve into the critical relationship between tanning, UV exposure, and laser treatments. With the recent sunny weather in the UK leading to increased UV exposure, they discuss the potential skin damage that can occur, including hyperpigmentation and irritation, particularly for those with lighter skin tones. Mike explains the science behind how ultraviolet photons can disrupt skin DNA and the body's natural response of producing melanin as a protective barrier. KEY TAKEAWAYS Increased UV exposure from sunlight or sunbeds can lead to skin damage, including hyperpigmentation and irritation, which c...
2025-06-0527 min
Lasers in SkinSurprise! Lisa is Pregnant, but What Does This Mean for LasersSparked by Lisa's own announcement of her pregnancy, this episode explores the potential impact of using lasers when pregnant. As Lisa shares her experiences with increased sensitivity to laser treatments and the effects of pregnancy on her skin, her and Mike discuss the safety concerns surrounding laser use for both technicians and clients who are pregnant. KEY TAKEAWAYS Pregnancy can increase skin sensitivity, making treatments like laser procedures feel more intense and painful than before. There is a recommendation for laser technicians who are pregnant to proceed with caution, as the effects of l...
2025-05-2920 min
Lasers in SkinLet's Make Mike Mad - Discussing Incorrect TrainingIn today's episode, Lisa and Mike delve into common misconceptions and myths surrounding laser treatments and skin cooling techniques. They discuss the fallacy that skin cooling can overcool hair follicles during hair removal, the importance of proper cooling for blood vessel treatments, and the misconceptions about spot sizes in tattoo laser treatments. The duo also addresses the critical need for safety glasses during procedures involving Q-Switch ND YAG lasers, emphasising the dangers of low fluence and the necessity of eye protection for both practitioners and clients. KEY TAKEAWAYS It is a misconception that skin cooling...
2025-05-2220 min
Lasers in SkinExplain Like I'm 5 - Absorption, Scattering, AnistropyIn this episode, Mike and Lisa delve into the fascinating world of physics as it relates to lasers and skin treatments. They break down complex concepts such as absorption, scattering, and anisotropy in a way that's easy to understand, even for a five-year-old. Through engaging examples, they explain how photons interact with atoms, leading to either absorption or scattering, and how this affects the effectiveness of different wavelengths in laser treatments. KEY TAKEAWAYS When photons encounter atoms, they can either be absorbed or scattered. Absorption occurs when the energy of a photon matches the energy r...
2025-05-1527 min
Lasers in SkinIPL - Is It The Worst Technology? NO!!Today, Lisa and Mike delve into the ongoing debate surrounding Intense Pulsed Light (IPL) technology versus lasers. They discuss common misconceptions about IPLs, such as their perceived lack of strength and penetration compared to lasers, and highlight the versatility of IPLs in treating various skin concerns. Additionally, they explore the emerging trend of Broadband Light (BBL) treatments, questioning how they differ from traditional IPLs. KEY TAKEAWAYS IPL (Intense Pulsed Light) is not a laser; it uses a broad spectrum of light wavelengths, while lasers emit light at a specific wavelength. This difference allows IPLs to b...
2025-05-0825 min
Lasers in SkinCommon Concerns of Having Laser Hair RemovalToday, Mike and Lisa investigate the most common concerns surrounding laser hair removal, as discussed in various online forums. They explore the concept of paradoxical hypertrichosis, synchronised hair growth, and the effects of laser treatments on hair colour, including the potential for hair to appear grey or lighter. KEY TAKEAWAYS There is a common misconception that laser hair removal can cause paradoxical hypertrichosis, where hair grows in areas that previously had none. However, many reports of increased hair growth after treatment are likely due to synchronised hair growth, which occurs when hair follicles are treated w...
2025-05-0127 min
Lasers in SkinExplain Like I'm 5 - How to Safely and Effectively Treat Darker Skin Tones with LasersIn today's episode, Mike and Lisa look at the complexities of safely and effectively treating deeper skin tones, particularly those with higher melanin concentrations. They discuss the importance of understanding how melanin affects laser treatments, noting that darker skin absorbs more energy, which can lead to increased risks of cellular damage and pain. Both Mike and Lisa challenge common misconceptions about using lower fluences for darker skin, advocating instead for higher fluences combined with enhanced cooling techniques to achieve optimal results. KEY TAKEAWAYS Darker skin has a higher concentration of melanin throughout the epidermis, which...
2025-04-2413 min
Lasers in SkinAre Laser Suppliers Putting Limits on Machines?In this episode, Mike and Lisa delve into a concerning trend in the laser and IPL industry: the potential capping of fluence output by machine manufacturers. They discuss recent experiences shared by practitioners who found their machines unable to deliver the higher fluences promised in their manuals, raising questions about the implications for treatment efficacy. Mike and Lisa advocate for the need to empower users with the ability to access the full potential of their devices, rather than imposing arbitrary limits that could hinder results. KEY TAKEAWAYS There is a growing concern in the industry r...
2025-04-1716 min
Lasers in SkinNavigating Criticism: Defending Our Training Methods in Laser AestheticsIn this episode, Mike and Lisa delve into a recent critique of their training methods regarding laser hair removal, specifically addressing concerns raised by a laser supplier about their promotion of higher fluences and external cooling techniques. Mike & Lisa clarify the science behind pulse widths, fluences, and the importance of targeting stem cells rather than just the hair itself. Mike and Lisa also touch on the implications of using higher fluences on handpiece longevity and the overall effectiveness of treatments, encouraging practitioners to prioritize results and client satisfaction. KEY TAKEAWAYS The relationship between p...
2025-04-1028 min
Lasers in SkinInnovative IPL Techniques: How Caroline McLean is Transforming Pigmentation TreatmentsIn this episode, Mike and Lisa interview Caroline McLean, an advanced skin practitioner from Skinology in Glasgow, who shares her extensive 20-year experience in the industry. They discuss Caroline's unique approach to using IPL for pigmentation, which contrasts with Mike and Lisa's established protocols. Caroline elaborates on her combination therapies, including the use of a cold laser bionic and CO2 treatments. KEY TAKEAWAYS Caroline McLean utilises a unique IPL protocol for treating pigmentation, which involves higher fluence settings and double passes, contrasting with traditional methods. This approach allows for immediate darkening of the pigment, indicating e...
2025-04-0340 min
Lasers in SkinExplain Like I'm Five - Fluence (again, it's important) and PulsewidthIn today's episode, Mike and Lisa dive into the fundamental concepts of laser physics through a fun "Explain Like I'm Five" format. They explore key terms such as fluence, pulse width, and wavelength, breaking down complex ideas into simple analogies. Mike explains how fluence, measured in joules per square centimeter, is crucial for achieving effective results in laser treatments, while pulse width is likened to the duration of a bus journey delivering energy to the skin. KEY TAKEAWAYS Fluence refers to the concentration of energy delivered to the skin during laser treatments, measured in joules p...
2025-03-2714 min
Lasers in SkinCan Social Media Forums Be Helpful?In this episode, Mike and Lisa delve into the complexities of online forums related to laser treatments, including laser hair removal and tattoo removal. They express their concerns about the often toxic environment of social media, where misinformation can spread easily and new practitioners may take inaccurate advice as gospel. The duo emphasise the importance of conducting thorough research and seeking multiple perspectives before accepting any information found online. KEY TAKEAWAYS Social media forums, especially those related to laser treatments, can provide both valuable information and misleading advice. It's important to verify information from multiple s...
2025-03-2008 min
Lasers in SkinCan You Wax While Getting Laser Hair Removal? We Think So!In this week's episode, Mike and Lisa look into the intriguing relationship between waxing and laser hair removal treatments. They explore the traditional belief that waxing should be avoided before laser treatments due to the risk of removing the hair target, but Mike presents a compelling argument based on the biology of hair growth phases. They discuss the importance of melanin in targeting hair follicles and suggest that waxing may actually enhance the effectiveness of laser treatments by reducing pain and minimizing harmful plume exposure for operators. KEY TAKEAWAYS Traditionally, it has been advised not t...
2025-03-1322 min
Lasers in SkinLaser Safety UpdatesIn this episode, Mike and Lisa discuss the exciting news of Mike's recent election as chairman of the Association of Laser Safety Professionals (LPA). They talk through the organisation's mission to promote laser safety across various sectors, including clinics and industrial settings. Mike shares insights about the role of Laser Safety Officers (LSOs) and the new online course he's developing to train them, emphasising the importance of safety in laser use. KEY TAKEAWAYS Mike Murphy has been elected as the chairman of the Association of Laser Safety Professionals, which aims to raise awareness of laser s...
2025-03-0611 min
Lasers in SkinEmpowering Laser Technicians: Natasha Shares Her Four Essential Tips for SuccessIn this episode, Mike and Lisa welcome their first online guest, Natasha, a laser technician from Northern Ireland. Natasha shares her journey through the challenges she faced early in her career, including a distressing experience with a potential lawsuit. She discusses how she overcame her initial lack of confidence and offers valuable tips for new and aspiring laser techs. KEY TAKEAWAYS Having proper insurance is crucial for laser technicians. In the event of a legal issue, it's essential to pass all correspondence to the insurance company, allowing them to handle the situation. Technicians...
2025-02-2738 min
Lasers in SkinLet's Talk RegulationsIn this episode, Mike and Lisa delve into the anticipated new regulations for laser treatments set to be introduced in Scotland in 2026. Drawing from Mike's extensive experience in the industry since opening the world's first tattoo removal clinic in 1989, they discuss the current regulatory landscape, the potential qualifications required for practitioners, and the importance of medical oversight for certain treatments. There is confusion surrounding existing regulations and a need for clarity as the industry evolves. KEY TAKEAWAYS New regulations regarding laser treatments in Scotland are expected to be proposed in 2026, with ongoing discussions about the q...
2025-02-2014 min
Lasers in SkinWelcome to the Lasers in Skin PodcastIn this very first episode of the Lasers in Skin podcast, physicist Mike Murphy and his daughter, Lisa McMahon, introduce themselves and share their unique backgrounds in the world of lasers and skin treatments. Mike recounts his journey from studying physics and astronomy to pioneering laser tattoo removal and becoming a laser protection advisor. Lisa reflects on growing up surrounded by lasers and her transition from a corporate HR role to working alongside her father in the laser training industry. Together, they discuss their plans for future episodes, including educational segments, myth-busting, and interviews with industry professionals, all aimed...
2025-02-1317 min
Lasers in SkinHow Do We Treat Blood Vessels?In this episode, Mick and Lisa dive into the fascinating world of vascular removal treatments, specifically focusing on their favourite methods using IPL and long pulse YAG lasers. Lisa shares her excitement and detailed protocol for treating blood vessels, discussing the importance of pre-cooling the area, selecting the right fluence, and the technique of applying gel to the IPL tip. They explore the nuances of treating different types of vessels, including stubborn cherry angiomas and deeper leg vessels, while emphasising the significance of cooling and aftercare to minimise risks like hyperpigmentation. KEY TAKEAWAYS The preferred t...
2025-02-1316 min
Lasers in SkinAsk Dermalase AnythingIn this episode, Mike and Lisa dive into a lively question-and-answer session, addressing a variety of topics related to laser technology and safety. They discuss common misleading claims made by laser suppliers, particularly regarding hair removal capabilities and output power, emphasising the importance of understanding fluence over mere wattage. The duo also shares humorous anecdotes, including Mike's penchant for dad jokes and a lighthearted debate about safety goggles versus ice pack cooling during laser treatments. KEY TAKEAWAYS Many laser suppliers make exaggerated or false claims about their machines, such as the ability to treat all h...
2025-02-1315 min
Lasers in SkinEver Felt Like an Imposter? - An Interview with Dr Marc ReidIn this episode Mike and Lisa sit down with Dr. Marc Reid, author of "You Are Not a Fraud: The Scientist's Guide to Imposter Syndrome." Together they delve into the complexities of imposter experiences, exploring their origins, manifestations, and strategies for managing them. With personal anecdotes and insights from Dr. Reid's research, including a survey of over a thousand participants, the discussion highlights the commonality of these feelings among professionals, particularly during career transitions. KEY TAKEAWAYS Imposter syndrome, or the imposter phenomenon, is a common experience where individuals doubt their accomplishments and fear being exposed...
2025-02-131h 12
Lasers in SkinExplain Like I'm Five - Fluence and FrequencyIn this episode, Mike and Lisa dive into the concept of fluence, a critical factor in laser treatments. They explain fluence as the concentration of energy delivered to the skin, emphasising its importance in achieving successful results for various procedures like hair removal, tattoo removal, and treating blood vessels. They also cover related terms such as pulse width and wavelength, using relatable analogies to simplify complex physics concepts. KEY TAKEAWAYS Fluence refers to the concentration of energy delivered to the skin during laser treatments, measured in joules per square centimetre. It is crucial for achieving e...
2025-02-1315 min
Lasers in SkinIs Skin Cooling Important for All TechnologiesIn today's episode, Mike and Lisa delve into the critical topic of skin cooling during laser treatments. They discuss the importance of maintaining optimal temperatures to prevent pain and thermal damage to surrounding tissues, particularly collagen. Mike explains the thermodynamics behind laser energy absorption and the necessity of using effective cooling methods, such as ice packs, to draw heat away from the skin. The duo also addresses common misconceptions about air and cryo cooling systems, emphasising that while they can be effective, they often fall short in providing the same level of cooling as ice packs. KEY T...
2025-02-1316 min
Lasers in SkinComing Soon...ABOUT US Mike began his career in medical lasers in 1986 with a physics degree and a post-grad in bioengineering. He helped develop the scar-free removal of tattoos using a Q-Switched Ruby Laser in Glasgow, and the world's first IPL system. Known well in the industry for his hard truths, no BS attitude and logical answers. As the author of three books, articles for medical journals, a well read blog, a Laser Protection Advisor and contributor to the BMLA, Mike is the Laser Guru. Lisa's claim to laser fame is being Mike's daughter. Growing up with...
2025-01-1500 min
Total Movie RecallTMR 046 – Leprechaun This week on Total Movie Recall, Steve and Ryan wonder why kids are scared of the stupidest boogeymen. The Leprechaun haunted Ryan for his entire childhood, waiting in dark corners, making it unable for him to pee in the middle of the night. If only he had watched the movie when he was seven years old, and seen how stupid, unscary, unwitty, and half-assed this boring, lazy movie is, he wouldn’t have wasted another second being scared. The Leprechaun can’t even be bothered to turn limericks into dirty rhymes. Nantucket! It rhymes itself! Lepr...
2020-11-091h 24