This is a Japanese product that has been around for decades. Almost everybody has tried it at some point or at the very least, have heard of it. There’re a few Japanese companies that make tsubaki (Japanese word for Japanese camellia flower) oil but Oshima is the most well known and famous — after all, Oshima (a very small island in Japan) is renowned for their Japanese camellia flower!
This product is marketed now as a hair and scalp treatment product since that is what most people are using it for but back in the days, it was actually a multi-purpose oil.