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Shampoo with Head & Shoulders every other day. Weekly, I add a dollop of Ketoconazole shampoo to the H&S to positively control dandruff associated with seborrheic dermatitis. (The Ketoconazole, while great for dandruff, is crappy shampoo by itself, hence my mixture. Moreover, one only needs to add the Ketoconazole once a week.)
After drying and combing my hair, I use cheap Suave unscented hairspray to keep everything in place. At age 73, a full head of hair is a gift, and I aim to take care of it 'til it's gone or I'm gone.