If your SD keeps improving, simply keep at it. On average I found that it takes about a week for everything to clear up (if treatment is actually working).
For me though, the sea salt seemed to become less effective over time and then stopped working all together.
A more complete outline of everything I’ve tried is outlined in the “Overview of Seborrheic Dermatitis Face Treatments” post.
The Restoraderm mentioned there has been working for about a year now. However, just in the past month I think I may have found a more specific (food) related issue. However, I still need time to know for sure. If you want a preview of that approach there is a link and password for it in this comment on that overview post.
Let me know if I’ve missed anything or if you want any other questions.
Hope that helps mate and best of luck.