One way the parasites adapt to living within the host is the thinning of their cuticle which allows them to absorb nutrients, and the osmotic pressure of the interior of the parasitic worms remains less than or same as that of their host, so that they have no difficulty in exchange of water. This makes them vulnerable.
When the homemade parasite Paste is applied, any parasites near the surface of the skin are instantly drawn out by the sudden osmotic pressure difference! The paste ruinates their osmoregulation! It also works to draw out other unwanted debris like fungal stuff, small calcifications, etc…
Here’s a couple of great articles explaining it further: