I found this stuff in Japan and it's incredible! It's great for thin hair. It's what I imagine post-shower hair oil does for the thick hair girls. Just spray it on after your shower when your hair is still a bit damp, no frizz :)
Shiseido - Tsubaki Premium Treatment Hair Water
11 in 1 hair growth oil! Put it on at night or a few hours before you shower, massage it into your scalp and thne make sure to double shampoo to fully wash it out. Helps with hair growth and shine! :)