In this video plasma and its effect on skin based on depth is covered during an online presentation session. People have a question about the effect of the plasma device on the skin.
The longer the arc applied the deeper the ablation of the arc. So the depth of treatment depends upon the duration of arc on the surface during treatment.Any arc, including the smallest, does get into the dermis or reaches the bone if applied long enough.
The arc auto-extinguishes if you touch the skin. If you touch the skin using the tip the voltage will drop which extinguishes the arc.