Different parts of the body have different growth phases. Some parts of the body only have 20% growing hairs visible at a certain time of the year. Other parts of the body might have 80% of all visible hairs in growth phase at a given time of the year. Again, if a hair is not visible, and not in growth phase, you won’t get maximum benefit of the treatment.
On the modality issue, we are running circles around a tree here. The point is, thermolysis DOES have the ability to have the same efficacy of Galvanic, it just depends on the skill of the electrologist performing the treatments, and the equipment the electrologist is using. That being said, it is easier to get any kind of clearance with Thermolysis over either blend or galvanic because it is more likely one can clear out any area in one day, or one week, if one took the time. It also stands to reason that one would be more likely to achieve a full clearance in an area with Thermolysis within the window of time before the hairs that are in growth phase slip into shedding phase, and other new hairs start their new growth phase. Remember, you only have a space of a few weeks before your body moves on to the next set of hairs.
This is why people trying to do large areas with galvanic spend years doing it, they are really only thinning out hairs slowly.
Imagine that you are in the Space shuttle, and you are charged with removing every dandelion flower from the earth from your fixed position in space. As the world rotates, you would pick off flower after flower, but since the world is rotating, you can’t actually clear so much as a field underneath you, because the world below you keeps turning, so you can only take what you can, and wait until that field comes back into your view 24 hours later.
Thermolysis is fast enough to clear the field before the rotation moves that set of hairs out from under you. Galvanic is not, unless you don’t have many hairs to start with. If the person had lots of time, and could sit for hours, and hours of treatment, it would increase the number of hairs one could remove per day, but if you have that kind of time, and that kind of tolerance, one could get even more work done in thermolysis.
At any rate, the final word is that any competent electrologist can kill more hair follicles dead in one hour utilizing thermolysis than even the best galvanic operator could in the same time. Furthermore, the thermologist would give you the bonus of other hairs being cosmetically removed for further bare skin now, and those that do regrow will be thinner and weaker hairs easily picked off at a lower setting in the future.