Beef liver

Beef liver is rich in nutrients and has many positive health effects. Animal livers, such as beef liver, are high in minerals like zinc, iron, phosphorus, selenium, and copper in addition to having a healthy vitamin profile.

If you're looking to naturally increase keratin production, beef liver is an excellent option because it is one of the most potent sources of biotin. In fact, 3 ounces (85 grams) of cooked beef liver contains 31 mcg of biotin, which is 103% of your daily need. Additionally, the same amount of beef liver has a nutritious 24.5 grams of protein and 7,960 mcg of vitamin A, which is a remarkable 884% of the daily value (DV). Additionally, beef liver is a great source of a variety of important vitamins and minerals, including vitamin B12, folate, riboflavin, and iron.