Fenugreek seeds are very useful for removing dandruff. Soak few seeds of fenugreek in water overnight. Make a paste of that. Apply that paste on the scalp for an hour approx. Rinse off with a mild shampoo.
Applying Curd on your hairs and scalp is also an effective remedy. Let that sit for an hour and then rinse it off with a mild shampoo.
Rub a spoon of Baking soda on your scalp when the hair are wet. Leave it as it as for 60-70 sec prior to washing off your hairs.
Massage 3-5 tbsp of Coconut oil on your scalp. Let it sit for an hour. Then rinse it off with mild shampoo.
Massage 2 tbsp of Lemon juice into your scalp. You can stir 1 tbsp of lemon juice into 1 cup of water and rinse daily.
Crush a few Garlic cloves and rub it into your scalp, add some honey to avoid that garlic smell. Let it sit for sometime and rinse it off.
Massage with few drops of Olive oil into your scalp, cover with a shower cap overnight. You may rinse it off the other day.
Boil few Neem leaves in around 4 cups of water. Cool and strain it out. Use the mixture to rinse your hairs 2-3 times a week.
Take equal amount of water and Apple cider vinegar and add 15-20 drops of tea tree oil in it. Apply the mixture on your scalp and massage. Rinse it off after few mins. Follow the same 2-3 times a week.
Boil the Green tea leaves in a pan for 15 mins. Strain the mixture and let it cool down. Apply the same to your scalp and leave it for 30 min. Rinse well.
Try Aloe vera. It is best when directly extracted from plant and applied on your scalp. You can wash your hairs then after with a mild shampoo. It also calms down the irritated scalp and provides relief from inflammations.