The essential vitamins and minerals for promoting hair growth and healthier hair include:

1. Biotin (Vitamin B7)
2. Iron
3. Vitamin A
4. Vitamin D
5. Vitamin E
6. Zinc
7. Omega-3 fatty acids
8. Vitamin C
9. Vitamin B12
10. Protein (amino acids)

Beef Liver Nutrient Content:

1. Biotin (Vitamin B7): Moderate amounts
2. Iron: High content
3. Vitamin A: Very high content
4. Vitamin D: Small amounts
5. Vitamin E: Small amounts
6. Zinc: High content
7. Omega-3 fatty acids: Low amounts
8. Vitamin C: Not present
9. Vitamin B12: Very high content
10. Protein (amino acids): High content

Summary:

• Found in Beef Liver: Biotin, Iron, Vitamin A, Vitamin D, Vitamin E, Zinc, Vitamin B12, Protein
• Not Found or Low in Beef Liver: Omega-3 fatty acids, Vitamin C

Beef liver contains 8 out of the 10 essential vitamins and minerals that are important for promoting hair growth and healthier hair. Therefore, 8/10 of these essential vitamins and minerals can be found in beef liver.