The combination of red henna powder and indigo powder has darkened my hair. My original hair colour was mid brown with red. I have used red henna for years. As my hair has gradually whitened the red has become more intense. I had never used indigo before so was cautious about the amount that I added to the mix. Around half a standard mug to 1 teaspoon of indigo to start with worked for me. The pack came with plastic gloves and a shower cap The gloves were too thin so would recommend that you use a stronger latex glove when appplying. The actual product is very good.