Well, the use of colour can be negatively
affected by any hair care product. The gel could potentially impact on
the colour due to the pH level (pH neutral). Generally, hair care
products that are designed to not affect colour are Acidic, around pH
of 4, which shocks the hair follicle and closes it to prevent the dye
from getting washed out during shampooing or bled out during styling.
We have tried to keep our products pH neutral (around 6.5 for the Gel)
so they are non-irritating, as acidic products that are left on (like
the Gel is) can be irritating to the scalp if you're already suffer
from any irritation or dryness. Dreads seem to cause more problems with
scalp irritation already due to the nature of the style, so pH neutral
is definitely the way to go.
It is also possible that some of the dye in the hair can be
absorbed by the beeswax in the dread wax, which you will probably have
in your hair if you has newer dreads. As your dreads mature and knot
and your use of new wax decreases then it is possible that the dye loss
will minimize, and you will only notice the normal level of fading that
is typical with any dyed hair.