Reddish dye (5)

I believe the answer is:
henna
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">reddish dye</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for henna that I've seen before include "Beauty aid" , "Hair/skin dye" , "Pigment used on skin" , "Reddish-brown hair-dye" , "(Shrub producing) reddish dyestuff" .)