Certain times of the month correspond to different types of magic. The spell you are casting may correspond to another time of month than a waxing Friday, so I would suggest you look up the moon phases and their magic related properties.
Every spell was designed by someone for their own specific needs, Apple Blossom Oil was used as a material for the person who wrote the spell specifically. What Apple Blossom Oil was required for with them may not be what's required when it comes to you.
I always suggest tweaking a spell to be more personal to the one using it, and this is a good example as to why.