It gets bad with winter. I've tried many, many kinds of dandruff shampoos. Started rather predictably with Head and Shoulders, and had a stylist tell me that it ain't good because it's too harsh. Recommended me another shampoo...also with pyrithione zinc as the active ingredient. T-Gel, Selsun Blue, Herbal Essences Moisturizing ... Between those, only the first and last ones worked well for me, briefly. Now I put it to SF: any recommendations? Personal experiences?