Chris, welcome to the Dermatology Expert Forum! Thank you for sharing your amazing story of dedication to your health. I am sure you feel much better with all those positive lifestyle changes you have made.
In regards to persistent redness and oiliness of your nasal skin accompanied with stinging (“for years”) and probable occasional scaling, have you ever been introduced to the idea that you might be experiencing symptoms of seborrhoic dermatitis? It is not unusual for seborrhoic dermatitis and rosacea to overlap. Your dermatologist can assess the skin from that aspect and make necessary adjustments in your topical therapy (for example recommend use of topical antifungal cream or gel).
I do not encourage you to wash entire face several times per day as that will damage your skin (dryness and scaling) and prolong recovery of nasal skin as well. On the other hand, gentle wiping (no rubbing) of excess oils on your nasal skin (when it bothers you) with soft cotton balls is harmless. Have in mind that your skin can be oily (increased activity of sebaceous glands) and dehydrated (damaged skin barrier function causes increased transepidermal water loss) at the same time.
I admire your nutritional changes. In general, balanced diet with a lot of antioxidants (e.g., vitamins A, C, E, green tea, etc.) optimal omega-3 fatty acids intake, healthy proteins, as well as minerals (selenium, zinc, chromium, iodine, magnesium, etc.) and vitamin D and B complex intake are recommended to support skin health.
Important aspect for optimal health is stress management – spend as much time as possible being relaxed and happy with somebody you care for and /or doing something you enjoy, if possible in nature.
Another thing to discuss with your dermatologist is laser therapy (for rosacea related redness and probably some telangiectasia).
Wishing You Optimal Health,
Dr Jasmina Jankicevic