overstimulating oil glands

I've heard opposite advices on oily skin care: that if I wash my face more than two times a day, the dry skin will trigger oil glands to produce more oil, so refrain from washing face more than that.  I've also heard that the oil glands are "not" smart, therefore it does not pump out more oil as a result of frequent face washing.  Which is true, and can you please suggest some reference materials that backs up these studies?

[BhumikaMD]

Hi,

Washing the face with oil is only recommended upto two times a day with mild soap, as well as using a soft mop to pat after washing.

It is not recommended to be aggressive while washing the face as it tends to aggravate the lesion, rather than stimulating any more oil secretion.

Read more at: http://www.guideline.gov/summary/summary.aspx?doc_id=9367

Let me know if you have any doubts.