Yes, Guava leaves might work effectively to control hair fall. Hair fall is a condition which generally occurs due to an imbalance of Pitta dosha. Guava leaves help to manage this condition due to its Pitta balancing property. It provides strength to the hair and control hair fall. Tip: 1. Add a handful of Guava leaves to a pan. 2. Add 2 cups water to it and leave it on medium heat. 3. Let it come to a boil. 4. Allow it to cool and strain the water in a bowl. 5. Once cool, apply it on your scalp and roots. 6. Massage lightly and rinse after 30 minutes.