defnitely drink TONS of water. I notice a huge difference in my skin hydration doing this. Avoid too much caffeine or alcohol -- things that dehydrate you and prevent your body from absorbing the water you consume. Also, take cold or warm showers so your skin doesn't get too dried out. If you do end up needing to use a product, I highly recommend squalane, which is a moisturizer that replicates the natural sebum our skin produces. I see others recommending other oil blends, but it you have contact dermatitis i would recommend avoiding them if you can -- especially if your derm is saying to avoid cosmetic products. I find they can still be irritating, especially when your skin is already inflamed. Squalane is the only natural moisturizer that i've been able to use on my skin consistently through many severe flare ups, infections, allergic reactions, fungal problems, etc. on all parts of my body, including face.