Yes, oily skin often goes along with rosacea. There seems to be a marked
division into two camps: those with oily, spot-prone skin and those with very
dry and hypersensitive skin.

It seems to me that the latter group are more likely to flush badly, but that is
only based on impressions gained from reading the boards, so I might be wrong.
(I wonder how many of the oily-skinned brigade flush badly and/or often?)

On Vitamin D3, perhaps consult the relevant part of our Resource Pages section:

http://rosacea-research.org/wiki/index.php?title=Vitamin_D3

Then scroll down for Dan's explanation of the difference between vitamin D3 and
other forms, which includes this link:

http://jcem.endojournals.org/cgi/content/full/89/11/5387

Kind regards,

Aurelia