My niece recently had a free sample of a new product called seborrhex before it is officially launched into the market. It has done wonders for her condition and even more, her self esteem. Her SD cleared up 2 days after she started applying the liquid to her face and has not returned (yet?) after 3 weeks. If anyone is having issues with SD, they may want to get in contact with the company and get a free sample while they are giving it away free ( I read somewhere that it will be £25 a bottle when it is launched). If you type the following into Google, it will find the site for you (this is how my niece was told to find it):
seborrheic dermatitus seborrhex.co.uk
Hope you get in on time to get a free bottle and it helps you too. Good luck.
(They also have a really comprehensive E-BOOK on SD which is very helpful).
PS. The site and company are nothing to do with me and I am just passing on some potential help to people.