Are there any hair-dye brands that I can use the left-over stuff for another time? I have short hair so I don't need to use the whole bottle of product. I use just for men and when I kept the left-overs in a sealed container then it won't work when I go to re-use it.
yes you keep the powder and developer separate. once they mixed they start neutralizing
>>34325329you could get professional quality materials and then what >>34325341said is absolutely true. consider google.