More on Thermal Relaxation Times

  TRTs I’ve had a number of enquiries about my article on the relevance of thermal relaxation times in photothermal treatments. They were asking for clarification. So here goes…. Thermal relaxation time (TRT) describes how quickly an object loses heat energy. Typically, it is the time taken for the temperature of an object to drop… Continue reading More on Thermal Relaxation Times

Laser Tattoo Removal – the important considerations

Laser tattoo removal has been available commercially since we opened the world’s first private clinic to offer this treatment in Glasgow, Scotland in 1989 following our groundbreaking clinical research program in Canniesburn Hospital, Glasgow during the 1980s (see our 1990 publication in the British Journal of Plastic Surgery). We used the Q-switched ruby laser which… Continue reading Laser Tattoo Removal – the important considerations

“Q-switched 532nm laser energy causes significant vascular damage in the capillary plexus – how does this affect laser tattoo removal?”

A new publication just went live on the British Journal of Dermatology site at http://onlinelibrary.wiley.com/wol1/doi/10.1111/bjd.16130/abstract. It discusses my observations on non-tattooed skin (my own) following irradiation with a Q-switched 532nm laser. I found that there is a significant amount of damage in the capillary plexus soon after irradiation. This is not surprising since the absorption… Continue reading “Q-switched 532nm laser energy causes significant vascular damage in the capillary plexus – how does this affect laser tattoo removal?”

Are picosecond lasers worth the cost?

That’s a good question! A picosecond laser costs around £100,000 in the UK, at the moment. A ‘standard’ Q-switched laser costs anywhere between £10,000 and £60,000. QS lasers can output up to 2 Joules of energy in pulsewidths as short as 5 nanoseconds, while some commercially available pico lasers can output up to 1 Joule… Continue reading Are picosecond lasers worth the cost?