One reason why the hair might not release after 3 attempts in the same follicle is that when current is released in the follicle during thermolysis, the tissue in that follicle heats up. This electrocoagulation is now causing a barrier in the follicle whereby the next insertion is unable to reach the dermal papilla. This will most likely result in an ingrown hair or perhaps a pustule. The follicle can be treated after healing has taken place.
Once the electrocoagulation takes place in that follicle from thermolysis administration, if the gradient is wide
enough, meaning the circumference/area within the follicle being treated, you will have a successful epilation.
Dr. Schuster did lots of research where he examined hairy cross sections of tissue. Curly hairs don’t look that curved under the skin; there is just a slight curvature. Keep in mind that should you see a hair that looks very curly, it does not look that way under the skin. It can look curly on the surface of the skin, it can look curly once it comes out, as it coils up.
Thermolysis can work for these hairs however the area within the follicle being treated must have a wider gradient. Blend is an option, Galvanic is an option but if you don’t find a skilled electrologist, your practitioner might have a problem with any modality.