My lo is close to 9 weeks old and his hair is kinda fine type. How to make baby hair grow denser?

maybe u can try this as i been using it on my kids for nearly 20 years.its also good for us who keep losing hair too.The best part it has a nice fragrance.u can buy it at malay shop selling jamu or maybe at Geylang.its cost $3 at Geylang,other places selling $3.50-$4