i’ve been using henna (and indigo from a different brand) to dye my hair for years now, and this is by far the best henna and directions on how to use it because Lisa knows what she’s talking about when she says how to prepare the henna. i have never had such an intense red from the henna (and i was a bit impatient and didn't even wait the full 12 hours of prep, but i’ll try that next time to see if it gets even better!) and i only used half acv and half water. it even evened out the purple streaks i got from the stuff i used before. the instructions to keep the henna in the freezer changed the game for me. i cannot recommend this enough!