Does Caboki have any side effects?

[ice786]

When I use Caboki, I massage it onto my scalp to cover the thinning areas, but it won't wash out without shampoo, and requires rigorous effort to be washed out.
Since I don't want to use shampoo everyday, my question is- is there any harm if I just wash my hair with water and only leave the residual amounts on my scalp?

Can Caboki penetrate the scalp and affect the follicles or cause other problems? What about using Caboki at the gym, is there any harm of its fibers clogging pores, etc?

Thanks for the feedback!