Dandruff may be the result of a dry scalp, or a skin condition called seborrheic dermatitis. It could also be caused by eczema, psoriasis, or, very commonly, an overgrowth of a yeastlike fungus called malassezia. (Here are 5 more surprising causes of dandruff.) Drugstore dandruff remedies might include shampoos with zinc pyrithione, which targets fungus and bacteria; ketoconazole, which also fights fungus; coal tar and selenium sulfide, which slow the growth and die-off of skin cells on your scalp; and salicylic acid, which loosens flakes so they can be washed away. For some trusted dandruff remedies, read on.
Aspirin contains the same active ingredient (salicylic acid) as many medicated dandruff shampoos. Keep flaking in check by crushing two aspirins to a fine powder and adding it to the normal amount of shampoo you use each time you wash your hair. Leave the mixture on your hair for 1-2 minutes, then rinse well and wash again with plain shampoo. Here are some more amazing uses for aspirin.
Tea tree oil
One study showed that shampoos with just 5 percent tea tree oil significantly improve the severity of dandruff. You can also add a few drops of tea tree oil to your favorite shampoo as you wash normally. Tea tree oil can actually reduce the effects of several unpleasant conditions.
Your kitchen could hold the key to an itch-free, flake-free scalp. Some ingredients you use every day double as effective dandruff remedies—like baking soda. Wet your hair and then rub a handful of baking soda vigorously into your scalp. Skip the shampoo and go right to rinsing. Baking soda reduces overactive fungi that can cause dandruff. Your hair may get dried out at first, but after a few weeks your scalp will start producing natural oils, leaving your hair softer and free of flakes.