I finally received the printed copies of my new edition of the “hairy” chapter. This edition has nearly 100 more pages than the 1st edition. (305 pages in this edition compared with ‘only’ 219 in the first!!) More info on… the timings between treatment sessions; the details on the various stages of the anagen growth… Continue reading New edition of my book chapter on laser/IPL hair removal – available now!
Tag: beauty
PMU inks – what is in them?
I recently came across an excellent book called “PMUni Colourant Manual” by Jasmine Diebelius which delves into the world of PMU inks and their constituents. In it, she indicates the pigments used to formulate many commonly-used PMU inks. This has proved very interesting to me, because of the ramifications for laser removal. In one section,… Continue reading PMU inks – what is in them?
Should we wax or pluck before laser/IPL hair removal? The science…
This is an interesting question. Virtually everyone’s initial response would be a resounding “NO”. “Why should we? We would be removing the target we are trying to destroy!!” Well, yes, of course. That’s obvious. Except, it isn’t… A telogen hair, about to transition into anagen 1. To answer this question properly, we need to look… Continue reading Should we wax or pluck before laser/IPL hair removal? The science…
Fluence, pulsewidths, temperatures and cellular denaturation
This topic is very poorly understood. How does fluence and pulsewidth relate to cellular denaturation – or, ‘cooking’ of the cells. I’m going to portray this in a series of graphs – I hope this works… When we fire light energy into the skin, we can generate some heating, if there is something in there… Continue reading Fluence, pulsewidths, temperatures and cellular denaturation
Hair removal – how does fluence relate to depth?
We all know that light energy can kill hair follicles. It has been around since about 1996. But, many people still don’t understand the relationship between fluence and depth in the skin. Let’s begin with fluence – what is it? Simply put, fluence is just the concentration of light energy on the skin surface. If… Continue reading Hair removal – how does fluence relate to depth?
“Synchronised hair growth” – Yes – it is real!
This issue keeps appearing in online forums. Many laser/IPL operators talk about ‘lots of hair growth’ usually after a few sessions. So, I investigated this with my computer model. I had developed this model a few years ago to look at the ‘best’ time intervals between repeat treatments. Last year, while researching laser/IPL treatment of… Continue reading “Synchronised hair growth” – Yes – it is real!
Association of Laser Safety Professionals – new Chairman
We held our AGM on Decemebr 11th and I was elected as the new Chairman of our Association. The Association of Laser Safety Professionals (ALSP) is a professional society of laser safety experts actively engaged in providing advice, support and training in laser safety, and covers all applications of laser technology. The primary aims of… Continue reading Association of Laser Safety Professionals – new Chairman
What is a Laser Protection Adviser and what do they do?
Today I was asked ‘what exactly is a Laser Protection Adviser (LPA)?’ So I thought I’d tell the whole world… In the UK, we have a number of specialists, who have a lot of experience with lasers and their safety aspects, who are known as LPAs. There are two groups of such people – the… Continue reading What is a Laser Protection Adviser and what do they do?
The “Hairy Trinity” – How are fluence, follicle depth and treatment frequency related in hair removal treatments?
As many of you know, I like to build and develop computer models investigating how light energy interacts with skin constituents etc. I’ve been doing this since 1987 and am now beginning to get the hang of it!! One model I built, a few years ago, looked at the hair growth cycles across the body.… Continue reading The “Hairy Trinity” – How are fluence, follicle depth and treatment frequency related in hair removal treatments?
Fitzpatrick Type – what does this really mean and how does it affect our laser/IPL skin treatments?
Here we go again! Fitzpatrick – the most mis-understood concept in laser/IPL therapies. Everyone who does laser/IPL treatments on the skin talks about the “Fitzpatrick”. Yet most people don’t really know what it means! Here is my take: There are two things you MUST understand: The “Fitzpatrick” is the skin’s response to ultraviolet radiation. Dr… Continue reading Fitzpatrick Type – what does this really mean and how does it affect our laser/IPL skin treatments?
