Dandruff is more than one simple problem. It may be the result of a dry scalp, or a skin condition called seborrhoeic dermatitis. It could also be caused by eczema, psoriasis, or, very commonly, an overgrowth of a yeast-like fungus called malassezia. Over-the-counter remedies include shampoos with zinc pyrithione, which targets fungus and bacteria; coal tar and selenium sulphide, 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 more natural treatments, read on.
One study showed that shampoos with 5% tea-tree oil significantly improve dandruff severity. You can also add a few drops of tea-tree oil to your favourite hair shampoo as you wash normally – but avoid getting it in your eyes as it can sting.
Bicarbonate Of Soda
Overactive fungi can cause dandruff. Wet your hair and then rub a handful of bicarb vigorously into your scalp. Skip the shampoo and go right to rinsing. Because bicarb is an alkaline, it may bring the pH balance of the scalp to a healthy equilibrium. Your hair may feel dried out at first, but after a few weeks your scalp will start producing natural oils, leaving your hair softer and flake-free.
Apple Cider Vinegar
The acidity of apple cider vinegar changes the pH of your scalp, making it harder for yeast to grow. Mix a quarter cup of apple cider vinegar with a quarter cup water in a spray bottle, and spritz on your scalp. Wrap your head in a towel and let it stay on for 15-60 minutes, then wash your hair as usual. Do this twice a week.