We are aware that dandruff is a leading cause of dermatological and hair issues. Therefore, i'am sharing some tips to help manage it. 

• If your dandruff shampoo stops working be sure to get a different kind. This happens because your body is same thing everyday you build up a tolerance.
• Avoid detergent based shampoos.
• Rinsing your scalp with a rinse of 1/4 cup white vinegar to 3/4 cup water may help the problem. The natural acids will help loosen any sebum (dead skin and oils) that clings to your scalp and flakes to form dandruff. Rinse thoroughly with warm, not hot, water. If you don't rinse well, you will smell like vinegar. While white vinegar is the gold standard of home remedies, apple cider vinegar or lemon juice should work as well. Lemon juice may lighten dark hair.
• If anti-dandruff shampoos aren't working, or if you notice redness on the scalp or silvery or yellow flakes, you may not have dandruff at all. A number of other conditions can lead to flaking skin and itchy scalp. See your primary care physician or dermatologist.
• Wear light-colored clothing (especially tops) while you have dandruff. Most people won't even notice.
• Try the condition only treatment first during a vacation or a time when you will be less publicly visible, since your scalp will be very oily at first. It will take two weeks to a month for the balance of oils on your hair and scalp to adjust itself.
• Use cold water when you shampoo your hair.
• It's best to get your vitamins from food, rather than nutritional supplements. A quick Internet search will turn up foods you can integrate into your diet that are rich in zinc, Omega-3s, and B-vitamins.
• Tea tree oil has antiseptic qualities that may help kill the fungus, and keep your scalp moisturized. You can buy a small bottle at many groceries and health food stores, and add 5-6 drops to your regular shampoo. Or just purchase a shampoo that contains tea tree oil.
• Buy and use two or three different types of regular shampoo and don't use the same one two days in a row. This way build up is minimized. For some reason this gets rid of lesser cases of dandruff.
• If you have hay fever, eczema, or other skin or respiratory allergies, your dandruff may be caused in part by an allergic reaction. In this situation, you may find it helpful to shampoo LESS frequently, so the natural oils that protect your scalp aren't stripped away. Allergic people may also react to dandruff shampoos by generating more dandruff. If you think this may be the case for you, try washing your hair with conditioner only, or washing less frequently.
• Try using a softer shampoo. During an interview, several barbers have said that the cause is often a harsh shampoo which kills or dries out the skin.
• Plain old fashioned Listerine® (the original amber formula) works wonders on dandruff! In fact, up until the 1980s, the label even mentioned that it was effective on infectious dandruff. Daily or several times a week, saturate a cotton ball with Listerine and swab over your scalp. The menthol and methyl salicylate are particularly effective at helping to relieve scalp itch. You may also choose to use Listerine as a shampoo rinse, it has similar effectiveness when used this way.
• Leave-in treatments like Scalpicin® may be useful for particularly itchy scalps. They contain either anti-inflammatory ingredients (like hydrocortisone) or one of the active anti-dandruff ingredients. Usually these treatments also contain menthol, which provides a cooling effect that reduces the sensation of itching.
• A quick internet search will turn up all kinds of home remedies for dandruff. While some of these may indeed work, anti-dandruff shampoos are inexpensive enough to be adequate for most people.
• Another possible remedy consists of pouring a generous amount of table salt into your hand before showering and covering your scalp in it. Gently rub it in, covering your whole scalp. Rinse it out in the shower, and shampoo normally.
• Try to often put oil on your hair.
• Try not to scratch your scalp (even if it is itchy); This causes even more dandruff to fall everywhere.
• Dandruff contrasts with dark clothing so consider wearing something light.
• Avoid itching. Itching makes your scalp bleed, which causes more dandruff to be produced.

Source: wikiHow.