Iso is the only real way to get
skin oil off of the
skin, which is the primary reason the
patch adhesive comes unbonded from the
skin. Of course if you have any Grain alcohol, it leaves no residue.
The other reason is that Iso can cause skin irritation if not rinsed prior to the patch being applied.
4. Location, Location, Location - Skin Real Estate is a major factor in how well your patch stays applied.