Wow. WD40 has petroleum-based aliphatic hydrocarbons which are classified toxic.
Don't get me wrong, WD40, is a great product for lube, penetrating oil and water block of metal but it was not indented for long time skin exposure. Note smell and skin tingle.
Polywater was designed for the task of friction reduction when pulling cable.
Let's assume you wear gloves when doing the cable install, using lube, and then use Jergens on your hands afterwards to prevent industrial dermatitis. QED.
Regards
Peter Buitenhek
ProfitDeveloper.com
"Never settle for a job well done...always look for cost cutting measures