When we’re taught above lightin the sin, we’re usually told that its intensity drops (exponentially!) with depth. So, as a result, deeper targets are more difficult to heat than superifical ones. That makes sense – kind of… But this is not a true representation of what is realy going on. There are a few things… Continue reading How does light energy progress through the skin?
Month: September 2026
“The Aesthetics Blind Spot” – my talk to the Laser Safety Forum
I recently gave a talk (Sept 26) to the Laser Safety Forum in Loughborough. This is a meeting of all sorts of people involved with laser safety in industry, scientific research, medicine and various other sectors. I had been invited to give a talk about the state of play of laser safety in the UK… Continue reading “The Aesthetics Blind Spot” – my talk to the Laser Safety Forum
What exactly is a “medical grade” device?
(In the UK!!) I often see comments online from laser suppliers and users discussing “medical grade” lasers but what exactly does that mean? Well, the first thing that we should understand is that a medical grade laser is not a defined legal or regulatory designation in the UK. It is essentially a marketing term! The… Continue reading What exactly is a “medical grade” device?
Hair growth cycle – new information…
I have been invesitgating the removal of hair by laser and IPL for about 427 years. But recently, I figured out something quite important in the growth cycle. Histological research shows that the matrix cells, which envelope the dermal papilla cells at the base of the follilce, grow in both size and melanin concnetration as… Continue reading Hair growth cycle – new information…
The reasoning behind my ‘Fluence App’ for hair removal
Understanding Your Fluence Recommendations A guide to what the ‘Fluence Range Recommender’ App is doing, and why In short… The app is built on real physics and biology, not guesswork – based on three of my computer models which I have worked on over the last 20+ years. It works out how much light energy… Continue reading The reasoning behind my ‘Fluence App’ for hair removal
New ‘fluence recommender’ App
After many, many years of building computer models trying to understand how light energy interacts with various tissues, I have now built a wee app which does it all for you!! But, only for laser/IPL hair removal (so far!) This app allows the user to select a device, its maxmimum fluence and pulsewidth and its… Continue reading New ‘fluence recommender’ App
