7 days after henna mix application and the oxidation should definitely be done by now.
Hmm. The argan batch has lost the slightly glossier quality. Both tests have the same amount of shine to them, but I still think the argan one is a little more red.
I think the colour is perfect: It’s so barely there, that even if you do know that it’s there, you still have to look closely. Absolutely perfect! I can “layer” this and I will have no worries about ugly roots or intense staining of various bathroom and kitchen surfaces.