Water-based gel is routinely used when applying lasers and IPLs on skin conditions like vascular lesions, benign pigmented lesions and hair removal. However, some manufactueres and suppliers suggest that gel is not required. Im not really sure why! So, what happens if you use, or don’t use, gel? As far as I am concerned… Continue reading Do you need gel for photothermal treatments?
Category: Interesting stuff
James Clerk Maxwell – a genius
James Clerk Maxwell was a Scottish mathematician and physicist who derived four laws which became the basis of electromagnetic theory. He discovered that all electromagnetic radiation moves at the speed of light, c, in free space. Einstein based his theories of relatvivity on Maxwell’s work and cited him as a genius. Sadly, he… Continue reading James Clerk Maxwell – a genius
Picosecond Lasers???
Are picosecond lasers as good as they claim? Tattoos can be removed by either nanosecond or picosecond lasers. Nanosecond lasers have been used for this purpose since the early 1980s when my group first successfully demonstrated the scar-free clearance of black tattoo ink using a Q-switched ruby laser in Canniesburn Hospital, Glasgow. (Reid W.H.,… Continue reading Picosecond Lasers???
Laser Safety Professionals
As of November 2016 I am the General Secretary of the Association of Laser Safety Professionals. The web site can be found at laserprotectionadviser.co.uk and their new blog is at alsp.blog. Mike.
Flying fragments
A couple of years ago I noticed pits on my glass slides after laser tattoo treatments. Under a microscope I could see ‘craters’ which had been formed by high speed ink fragments flying out of the skin. But I also saw what I call ‘insects’: I think these are melted portions of ink… Continue reading Flying fragments
Laser Tattoo Removal – Aftercare
I came across the following from a blogger in Singapore. It’s very informative and useful for everyone involved with laser tattoo removal…. http://tattooremovalsg.com/laser-tattoo-removal-aftercare/ Mike.
How long does it take a new photon to reach us from its creation in the sun?
All of the sun’s photons are generated through nuclear reactions within it. If a photon is generated at the centre of the sun it can take anywhere between 2 days and 200,000 years to escape the body of the sun. That’s because the path of the photon is purely probabilisitic. At the centre of the… Continue reading How long does it take a new photon to reach us from its creation in the sun?
How fast is the Earth moving through space?
Ever wondered just how fast we are moving through space? Well, the Earth revolves around the Sun at around 30 km/sec, in its annual path, which takes a year to complete. The Solar System revolves around the Milky Way centre at around 230 km/sec. It takes around 225 million years to complete… Continue reading How fast is the Earth moving through space?
How much energy does it take to heat a cup of coffee or tea?
So, just the other day, I was thinking about how much energy we need to destroy hair follicle and blood vessels. Typically we talk about 1 or 2 joules per pulse. Then I thought, what is 1 joule of energy? I had no idea what this actually meant in the ‘real’ world! So, I… Continue reading How much energy does it take to heat a cup of coffee or tea?
Cosmoprof, Hong Kong, November 2016
So I decided to go to this year’s Cosmoprof Show in Hong Kong. I know, it’s a dirty job but someone’s got to do it… I found many Chinese and Korean manufacturers of lasers, IPLs, RF equipment and loads of other interesting gadgets. I also spoke to a fair number of sales people and engineers… Continue reading Cosmoprof, Hong Kong, November 2016
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