I'm 20 Years Old And There Are Very Little Signs

I'm 20 years old and there are very little signs of beard(barely visible) on my cheeks. It's has been years they have stayed the same and are not growing thicker. How do i enhance beard growth? I know you'd want me to wait for it to grow on its own but it has been a long time now and there's no growth at all. Kindly, do suggest me a product. Thank you