To help with dandruff, focus on maintaining a balance of your Pitta dosha, as it’s often associated with excessive heat and dryness. Coconut oil, being cooling, can be applied overnight on the scalp to reduce inflammation and flakiness—do this 2-3 times a week. For deep detoxification, try massaging with warm sesame oil as well which is nourishing and helps eliminate dryness.
You mentioned incomplete evacuation - as this is resolved now, it’s vital to keep your Vata balanced, which might have been causing some dryness. Regular bowel movement suggests a good Agni, but to maintain it, make sure you’re eating warm, unctuous meals, including ghee, rice, green grams, and cooked vegetables. Avoiding overly spicy, oily, or cold foods can help sustain proper digestive health.
For greying hair, consider using Amla oil for scalp massage. Amla is rich in vitamin C and antioxidants, promoting melanocyte health—the cells responsible for hair pigmentation. Also, include foods rich in copper, zinc, and iron in your diet like nuts, seeds, and greens. As a rejuvenative tonic I recommend Chyawanprash, which supports tisarna (tissue nourishment) and strengthens overall immunity. Consume 1 teaspoon with warm milk daily. Choose brands like Baidyanath or Dabur, which are usually more traditional and authentic, though they might contain sugar. It’s tough to find entirely sugar-free options.
If you’re concerned about chemical additives, making Chyawanprash at home might be an option, though it involves effort and resources. Look for brands that clearly state no preservatives or sugar have been used - Sri Sri Tattva claims to use natural ingredients.
Monitor the impact of the changes you make, and if any severe worsening occurs, consider consulting with an Ayurvedic doctor in person. Maintaining good hydration and a regular sleep routine can support your hair and scalp health tandemly.
