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…
Author: Mike Murphy
I started in medical lasers in 1986! I have been involved in clinical research, medical laser and IPL development, sales and marketing across Europe and South East Asia, business start-ups, theoretical research into laser-tissue interactions, training course development, writing articles for peer-reviewed journals and industry magazines. I am currently the Chairman of the Association of Laser Safety Professionals.
New podcast episode on light scattering in the skin – how can it adversely affect tattoos?
Our latest podcast is about how light travels in the skin and the effects of ‘sideways’ scattering. This is a real effect, which I wrote about before (here). I mentioned how red light can scatter out from the original spot area into the surrounding tissues. This can lead to problems if you’re treating hair, for… Continue reading New podcast episode on light scattering in the skin – how can it adversely affect tattoos?
Latest podcast – Thermal Relaxation Times and all that…
One of our ‘Explain Like I’m 5’ discussions In this podcast we chat about ‘thermal relaxation time’ and why it is not particularly useful in many photothermal treatments, Rox Anderson and John Parrish’s original ideas, the ‘birth day’ of the laser and some other groovy stuff. Click on the above image to hear the podcast…… Continue reading Latest podcast – Thermal Relaxation Times and all that…
Ice cooling the skin is ‘unsafe’…
Someone sent me this – it made me laugh! “Ice packs can numb the skin too much” – how? By cooling the nerve endings (nociceptors) so much that they don’t send thermal pain signals to the brain. “…preventing client from feeling crucial heat sensations.” Perhaps they can’t feel the heat sensations because the skin has… Continue reading Ice cooling the skin is ‘unsafe’…
New product for sale – A bag of holes…
Finally, our newest product – a bag of holes. After much discussion with a manufacturer in the Arctic Circle, we are proud to launch our latest product after popular demand. Following on from his world-famous discovery of the ‘Hole in the Stick’ technique, Mike has decided to sell these laser-cut, precision holes in a range… Continue reading New product for sale – A bag of holes…
Why we must use HIGHER fluences on darker skins…
When treating skin with lasers/IPLs we are often told that darker skin tones must be treated with lower fluences. This is wrong! Our skin tones come from the concentration of melanin in the epidermis – mostly in the basal layer in lighter tones. In darker skins, the melanosomes may be found throughout the epidermis, not… Continue reading Why we must use HIGHER fluences on darker skins…
How far does light scatter in the skin?
When light enters the skin, it immediatley begins to scatter. This is the process where photons are absorbed by atoms (making electrons ‘excited’), and new photons are emitted shortly after (when those electrons ‘de-excite’). Inevitably, they leave the atom in a different direction to their original direction. This is called ‘scattering’. Consequently, the light spreads… Continue reading How far does light scatter in the skin?
New podcast – “Language”!!
In today’s podcast we discuss the use of language including paradoxical hypertrichosis, synchronised hair growth and the Fitzpatrick scale. We talk about how we should all be using the same terms and expressions to ensure that we are talking about the same things, otherwise confusion reigns… We hope you enjoy it and look forward to… Continue reading New podcast – “Language”!!
Blog post book now available online or as a pdf – over 500 pages…
My latest collection of blog posts is now available here: Downloadable pdf https://www.lasertraining.academy/about-8 Online flip book https://online.flipbuilder.com/rbhw/ypit/ Scan the QR code for the flip book Ciao, Mike.
Laser tattoo removal appears to generate a hazardous plume too!
I spoke with a trainee the other day and she told me an interesting story. She said that she had contracted pneumonia a couple of years ago. She then noticed that after a day of laser tattoo treatments, she would have quite severe coughing fits. This continued for a couple of years. She was prescribed… Continue reading Laser tattoo removal appears to generate a hazardous plume too!
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