Which concealers are most "natural" possible(without harmful substances)

[dreamermerlin]

HEy guys, do you know, are there on the market concealers most natural possible, ?(without harsh chemicals which may harm the existing hair).
I am searching for a concealer made from natural fibers.
Caboki was a candidate for this, or am i wrong?
Because i am thinking to use a concealer, but this may interfere with minoxidil applications, and washing hair 2x daily is a bit too much for me.
Thank you very much.

 

[mikeyt311]

i use caboki...natural.

 

[dexta]

I use Dushi (its Moroccan Fibers), also natural.