I have mixed results with both laser and electro. Not one method removed every hair in 1 session. Think 1 year of growth cycles.
I don't know, there is so much strange information...
For instance, I know that a beard hair can grow for 6 years! that means that for 6 years a certain amount is always in a growing phase. Which also means that some hairs can pop up after 6 years. And this is what I am facing now. I started somewhere in the 3rd year of growth, I had 3 years of removal, and now at the end I get new regrowth in other areas.
Laser? You would think that blond hairs work like fiberglass, tunneling light and heat. But it seems that black absorbs heat. Who knows, so much strange info out there... I don't know, I come to think that no method is best.
Removing the dermal papilla is not enough. When a hair dies, another stem cell is dropped in it's place. That sack of stem cells need to be destroyed. And it is located at the side of a hair shaft. So that means: heat or chemical reaction to destroy it.