Dandruff Fun

Getting annoying. Harder I wash my hair, more there is. Dry, white flakes. No itching, no irritation, just lots of flakes that are prominent after washing my hair with this and this. If I go a few days without a shower, as I often do on week ends when people leave, there is a decrease, if not total elimination, of the problem.
Before having fun, awkward talks with parents/doctors, I'd rather a quick internet fix.