In 1967, a few years after the first working laser was invented, Endre Mester at the Semmelweis University in Budapest wanted to find out if a laser might cause cancer. He shaved the fur off the backs of some mice, divided them into two groups and gave a laser treatment to one group, nothing to the other. The first group did not get cancer and to his surprise the hair on the treated group grew back more quickly than the untreated group. That was how ‘laser biostimulation’ was discovered. Nowadays, low energy phototherapy (LEDT) uses photochemical effects (of radiation on the body) and Low Level Laser Therapy in hair/scalp care.
Dr U. Wank, professor at the Saarland University in Germany and the medical engineering institute, has developed a eLaser system for Haire using homogeneous laser beams. When used for a period of time, the treatment with this laser starts to work: it penetrates the scalp and the roots to achieve strong, soft and shiny hair. The laser also helps the scalp to get rid of seborrhea and dandruff, restoring hair to a healthy, clean condition. This sytem stops hair loss and encourages regrowth.
LLLT (Low Level Laser Therapy)
1. What is LLLT?
LLLT has been widely used in Europe for 30 years and has been the subject of numerous studies, with more than 3,500 scientific articles published worldwide. Many long-term medical research programmes conducted at international level have shown that LLLT-triggered photobiostimulation has many positive results for hair regrowth with absolutely no side effects, in addition to being pain-free and non-toxic.
2. How does it work?
LLLT is a photochemical, non-thermal process.
Photons penetrate the dermis and are absorbed into the mitochondria and cell membranes. Inside the cells, the photon energy is converted into chemical energy in the form of an ATP. The permeability of the cell membrane changes, and this physiological change affects macrophages, fibroblasts, endothelial cells, mast cells and nerve conduction rates.
LEDT (Light Emitting Diode Therapy)
What is LEDT?
LEDT is a form of phototherapy that involves the application of non-coherent low power monochromatic light to stimulate the scalp.
It is used to increase the speed, quality and tensile strength of tissue repair. The technical term used to describe this therapy is photobiostimulation. LEDT is different from LLLT in that LEDT does not generate any coherent light waves.
However, many practitioners believe that the effects of LEDT are similar to those of LLLT and some studies have proven this to be the case.
LEDs have many benefits compared to lasers. They are cheaper than laser diodes and are therefore ideal for use in probes.
They are also harder-wearing and so can be used for intensive treatment. This is why LEDT was chosen by NASA as its preferred technology. It is important to remember that most photobiostimulation studies have been conducted using lasers. However, it could be argued that both LLLT and LEDT have a place in modern therapeutic practice.
Treatment that combines LLLT and LEDT is much more effective at stimulating hair regrowth than traditional therapies. Results from comparative studies have shown that either of these two methods can be effective as a hair care treatment.