Hedrin 4% Lotion and
Hedrin Once
can be
used with permanent
hair dyes. ... It is not advisable to
use Hedrin 4% Lotion or
Hedrin Once directly before colouring or bleaching because it may prevent the
colour taking to the
hair.
Hedrin Treat & Go is water based and
can be
used both before and after colouring.
read more >>