Optimal Times for Stimulating Tissue

Optimal Times for Stimulating Tissue

According to the Swedish Medical Society, which has been actively testing dosage and optimal times for stimulating tissue since 1976, a full 20 minutes is necessary in order to get the ideal dosage. Some competitors claim 6 minutes every day or even 90 seconds. This is simply not effective.

Lasers need to be absorbed by the scalp which takes 20 minutes depending on wavelength, beam diameter, fluence, and distance from laser head to scalp. Even more important is that the scalp is one of the thickest skin areas in the human body, therefore it is even more important everything is perfectly designed to ensure maximum effectiveness.

Unlike hot lasers which either burn or cauterize the tissue require a few seconds. LLLT is an extremely low-power laser application and thus requires more time for the hair follicles (Bulge and Papilla) to absorb photons in order to stimulate the mitochondria for each of those areas.

According to the first law of photochemistry, known as the Grotthuss-Draper law, light must be absorbed by a chromophore to initiate a photochemical effect and thus ultimately have a biological effect.

Therefore, light must reach the target tissue of interest to have an effect. In other words, the depth of penetration of light into tissue is extremely important because if the light of the proper wavelength does not reach the desired target, no photochemistry effects (biostimulation) will occur.