The lady that does my hair suggested this stuff probably cant buy it in stores, but you can online:
https://gamefaqs.gamespot.com/a/forum/c/c528cfd8.jpg
not specifically for thinning hair, but designed to give a natural looking hold
*its a white cream (like cortizone cream) that you use a pea sized amount rub on your palms then apply to damp/slightly wet hair
........the ghost in the machine...
IGN: Fox, FC: SW-4932-0940-2221