Here are a few natural remedies for dandruff ;

1 Lemon juice - Massage diluted lemon juice onto your scalp, leave it for a few minutes, then rinse. Be cautious if you have sensitive skin.

2 Neem oil - Neem oil has antimicrobial properties. Mix it with a carrier oil and apply it to your scalp.

3 Witch hazel - It can help balance oil production on the scalp. Dilute with water and apply to the scalp.

4 Fenugreek seeds - Soak fenugreek seeds overnight, blend into a paste, and apply it to your scalp for 30 minutes before rinsing.

5 Yogurt - Apply plain yogurt to your scalp and leave it on for about 30 minutes before washing.

6 Olive oil - Warm olive oil, apply it to your scalp, and leave it overnight. Wash your hair the next morning.

7 Rosemary oil - Mix a few drops of rosemary oil with a carrier oil and massage onto the scalp.

8 Tea rinse - Rinse your hair with cooled, brewed herbal tea like chamomile or green tea to soothe the scalp.

9 Onion juice - Extract onion juice, apply it to your scalp, leave it for about 30 minutes, and then wash it off.

Remember, individual responses to these remedies can vary, and it's important to do a patch test before applying any new substance to your skin. If your dandruff persists or worsens, it's best to consult a dermatologist.