Avoiding common mistakes to protect your dyed hair is important.  One mistake some individuals make is rinsing their hair with warm or hot water right after it has been dyed.  Hot water can increase your hair’s porosity. This can allow the pigments of the dye to come out through the pores.  This can ruin your color.  Rather than using hot or warm water to rinse dyed hair (right after dyeing it or in subsequent showers), use cool water to wash your hair and a cold water rinse to finish up.