How does fluence affect the number of hair follicles you can kill?

Fluence is probably the most critical factor when trying to destroy hair follicles or blood vessels. The depth of penetration of the killing zone depends on both the wavelength and also on the fluence. The higher the fluence you apply at the surface, the deeper the effect, and therefore the greater the number of hair… Continue reading How does fluence affect the number of hair follicles you can kill?

The new European laser eyewear safety standard

For a number of years now, we have been adhering to the EN207 laser eyewear safety standard, across Europe. This standard dictates the safety requirements for a wide range of laser safety eyewear. However, in 2021 a new standard was introduced, the EN ISO 19818-1 (Eye and Face Protection, Protection against Laser Radiation, part 1).… Continue reading The new European laser eyewear safety standard

I asked an AI to summarise my books. Here’s what it said…

I asked an AI for a summary of each of my three books.In particular, I asked for the salient points: Three Key Points: Based on the detailed content provided from “An Introduction to Medical/Aesthetic Lasers and IPL Systems” by Michael J. Murphy and Per-Arne Torstensson, here are three core points with their supporting arguments: —… Continue reading I asked an AI to summarise my books. Here’s what it said…

All our podcast episodes to date….

We launched our podcast ‘Lasers in Skin‘ back in Febraury 2025. Since then, we’ve published 41 episodes and had over 13,000 listens – no bad! Onwards and upwards… To let you find an episode easily, I have generated links to the Apple and Spotify platforms: 🔗 Lasers in Skin on Apple Podcasts🔗 Lasers in Skin on Spotify… Continue reading All our podcast episodes to date….

Listener’s Questions – more on our podcast…

Our latest podcast (2nd October 2025) features some questions submitted by some of our listeners. These include “over cooling” of the skin before laser/IPL treatments, stamping vs gliding when treating hair follicles, safety issues and why having a Laser Safety Officer or Laser Protection Adviser is a good idea! We hope you enjoy this episode… Continue reading Listener’s Questions – more on our podcast…

Podcast – An interview with me!!

In our latest podcast my lovely daughter, Lisa, interviews me – it was her idea!! In it, we discuss my history in lasers and IPLs starting with the original DermaLase company, back in 1988. We discuss my clinical and theoretical research at Canniesburn Hospital and Strathclyde University in the late 1980s and the world’s first… Continue reading Podcast – An interview with me!!

More on Thermal Relaxation Times – regarding tattoos and stuff…

Our latest podcast is about thermal relaxation times AGAIN!! Last time, we talked about this stuff with regard to hair and blood vessels etc (click here). I pointed out that we shouldn’t consider relaxation times when thinking about denaturing proteins in hair and blood – which is correct. However, I should have also mentioned that… Continue reading More on Thermal Relaxation Times – regarding tattoos and stuff…