For the Wondrous Substances on the Ladie's luck table there are a number of items that give a bonus to healing. My question is, is this a bonus to natural healing rate or an instant recovery of HP?

I would say they are instant HP recovery.

For the Wondrous Substances on the Ladie's luck table there are a number of items that give a bonus to healing. My question is, is this a bonus to natural healing rate or an instant recovery of HP?

In my "marked up copy" "Healing" is changed to "Hit Points"
and thus immediate
Modron's Ointment is the exception

Thank's for the quick answers!