Laser/IPL hair removal can be ‘tricky’. There are a number of issues to be consider including hair colour and depth, skin colour, hair growth cycle, body area, fluence, pulsewidth etc etc etc… My calculations show that the ‘standard’ efficiency, when trying to kill hair follicles, out there is typically between 50 and 60%. In other… Continue reading How do we improve the overall efficiency of laser/IPL hair removal?
Category: Other sciencey stuff
What you MUST know when applying lasers or IPLs to the skin.
People often ask my advice on treatments which don’t appear to have worked too well. Either there’s too little reaction in each session or no result after a number of repeat sessions. They don’t know why and turn to me for help. I am always happy to help where possible but to do so, I… Continue reading What you MUST know when applying lasers or IPLs to the skin.
“Pain free” hair removal. Is it real?
We often hear, these days, about “pain free” hair removal, with various lasers, usually diodes. But, is it true? Well, let’s look at this more closely… The aim with laser, or IPL, treatment of hair is to induce enough heat in the stem cells that stimulate hair growth in the follicles. To do this, we… Continue reading “Pain free” hair removal. Is it real?
Laser spot size – how it changes with distance from the target…
Most laser systems have a lens to focus the laser energy down to a sale spot diameter (see figure 1 below). However, in many systems, the focal point (where the spot diameter is the smallest) is outside the handpiece assembly. This has a potentially hazardous effect if not properly understood! The problem with this design… Continue reading Laser spot size – how it changes with distance from the target…
New IPL Masking Technique
I recently published an article in the Aesthetics magazine (Volume 7, Issue 3, Feb 2020) showing my results with a new masking technique in the treatment of angiomas and benign pigmented lesions – click here for my article. In it I show how higher fluences and longer pulsewidths may be used to treat small… Continue reading New IPL Masking Technique
Astronomer Have Spotted A Mysterious Object, Which Is 570 Billion Times Brighter than the Sun | Physics-Astronomy
via Astronomer Have Spotted A Mysterious Object, Which Is 570 Billion Times Brighter than the Sun | Physics-Astronomy Wow!!
Astronomers Spotted Strange Ripples “Unlike Anything Ever Observed” Around a Nearby Star” | Physics-Astronomy
via Astronomers Spotted Strange Ripples “Unlike Anything Ever Observed” Around a Nearby Star” | Physics-Astronomy This is very interesting!!
“The Big Freeze” – cryolipolysis and how it works
It’s the ‘latest’ thing out there but is it as easy as it sounds….? Here’s an article I wrote on this topic a couple of years ago. PDF version Mike. mike@dermalase.co.uk
How many photons are in a laser pulse?
Have you ever wondered how many photons you generate each time you fire a pulse of laser energy? I have! Fortunately, I can work it out because I’m a physicist. It’s the kind of thing us physicists do!! It keeps us off the streets at night…… So, to calculate this number we need to… Continue reading How many photons are in a laser pulse?
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