In this talk I discuss my 1-dimensional computer model which looks at the temporal evolution of the heat distribution, during and after irradiation of hair melanin. During longer pulsewidths (> 1ms) heat can ‘escape’ from the absorbing melanin into the surrounding tissues. As a consequence, the temperatures in the melanin are not as great compared… Continue reading BMLA talk 2024 – Modelling the heat conduction losses during long pulsewidth laser/IPL treatments
Category: Theoretical stuff – tissue denaturation / selective photothermolysis….
Another successful MasterClass in Glasgow, Feb 24
Another successful MasterClass, this time in Glasgow. So many ‘light bulb’ moments, according to our attendees. Some came from America (Jim and Lorena), one from Northern Ireland (Natasha – for the second time!!), a very nice chap (Bruno) from Belgium and many from across the UK. We also had our first virtual MC,… Continue reading Another successful MasterClass in Glasgow, Feb 24
How do we improve the overall efficiency of laser/IPL hair removal?
Laser/IPL hair removal can be ‘tricky’. There are a number of issues to be consider including hair colour and depth, skin colour, hair growth cycle, body area, fluence, pulsewidth etc etc etc… My calculations show that the ‘standard’ efficiency, when trying to kill hair follicles, out there is typically between 50 and 60%. In other… Continue reading How do we improve the overall efficiency of laser/IPL hair removal?
Hair removal – Diode, Nd:YAG or Alexandrite lasers. Or IPLs? Which is “best”?
Hair removal using light is currently the most popular aesthetic treatment on the planet today, apparently. These days we use diode, alexandrite and Nd:YAG lasers and IPL systems. But there appears to be some confusion over these different devices, with all sorts of dubious claims. Let’s go back to first principles… How does this treatment… Continue reading Hair removal – Diode, Nd:YAG or Alexandrite lasers. Or IPLs? Which is “best”?
Back-scattered light from the skin is much more than we think…
My Letter describing back-scattered laser radiation from the skin has been published in the ‘open market’ by Springer! I’m very pleased that they have done this. However, I am now thinking that the levels of back-scattered light are higher than I first thought. The is coming from new work I have been doing looking at… Continue reading Back-scattered light from the skin is much more than we think…
How long should you leave between laser tattoo removal treatments?
This is an important question but has not been properly studied clinically (to my knowledge). When my research group first developed the Q-switched ruby laser treatment of tattoos in Canniesburn Hospital, Glasgow, in the early 1980s they established that a minimum four-week period was the optimum time between repeat laser sessions. This became the standard… Continue reading How long should you leave between laser tattoo removal treatments?
New Book – Medical/Aesthetic Lasers & IPLs and Skin Treatments
I have been asked many times in the last few years for a recommendation for an introductory book describing the application of lasers and IPLs in aesthetic treatments. My answer was always the same – “There isn’t one!!” So, I finally took the plunge and decided to write one, with my colleague PA Torstensson. … Continue reading New Book – Medical/Aesthetic Lasers & IPLs and Skin Treatments
One-to-one online training now available
Finally, I’ve caught up with Zoom! I can now offer my training courses online in a one-to-one situation. You can ask me questions during the course whenever you like. Plus, you don’t need to have Zoom on your computer!! I prefer to do these courses with a small group of people – no more… Continue reading One-to-one online training now available
My ‘Hole in a Stick’ technique…
Using IPLs on vascular and pigmented lesions can be very successful when the correct parameters are used. My theoretical research clearly shows that longer pulses are ‘better’ than shorter ones, when dealing with small and large targets. In order to test this I submitted my lovely wife to a series of treatments on her angiomas… Continue reading My ‘Hole in a Stick’ technique…
British Medical Laser Association annual meeting 2019 – My talks
I’ve just been confirmed for two talks at this year’s British Medical Laser Association meeting in London in May. I’ll be presenting OP18 and OP20 on Friday May 10th, 2019 at 8.15am and 8.45am respectively, in the Endeavour Room. 1st Presentation – OP18 The first presentation is entitled “Laser Tattoo Removal – a deeper analysis… Continue reading British Medical Laser Association annual meeting 2019 – My talks
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