Healthy hair, nails, and skin require sufficient nutrients, including vitamins A, D ... which provides 38 servings. Each 12-g serving provides 12 g of collagen, sourced from grass-fed cows.

How can I get my hair to grow longer, and will hair-growth vitamins finally work for me ... are actually funded by the brands themselves,” says dermatologist Dhaval G. Bhanusali, MD, who specializes ...