How long should brown and dark shades be left on?

Related questions

• What is khadi Color Prep & when do I use it?
• Why do you need to cover your hair with a cap during coloring?
• What’s the best way to rinse out khadi Natural Hair Color?
• What happens if I mix khadi Natural Hair Color with water below 140°F?
• What happens if I mix the color hotter than recommended?
• What happens if I shorten the processing time to less than 30 minutes?
• How long should khadi red tones be left on?
• How long should khadi blonde shades process?
• What is the best processing time?
• How long can I store unused khadi Natural Hair Colors?
• Does Naturally Colored Hair require special care?
• Why isn’t all Hair Color Shades vegan?
• Should I dye a test strand?
• Can I use hair care additives?
• How often can I color my hair with Natural Hair Color?
• Why is temperature important when mixing the dye?
• Do I need to use a thermometer to mix the color before applying?
• What happens if I let the Natural Hair Color sit longer?
• Can I save leftover Color Mixture?
• Do khadi Natural Hair Colors stain the skin/scalp?
• Why is my powder a different color than the desired hair color?
• How do I achieve a light more transparent tint?
• Do I need pre-treatment and aftercare?
• Why should I avoid silicone-based products?
• Is every hair type suitable for khadi Natural Hair Colors?
• Can I achieve cooler tones (purple, blue) with khadi Natural Hair Colors?
• Can I darken my light hair with khadi Natural Hair Colors?
• How long should I wait after Color Prep before applying the next step, the desired Hair Color Shade?
• Can I mix my desired color with the Color Prep pre-pigmentation?
• My hair is hard to comb after coloring. What can I do?
• Can I apply khadi Natural Hair Color to dry hair?
• How much water should I use for the mix?
• How can I cover the first grays without darkening my hair?
• My hair turned out way too dark. What can I do?
• How can I cover my roots without making my hair darker?
• How do I achieve optimal gray hair coverage?
• How do I fix a purple tint in my hair color?
• What can I do about a greenish tint?
• Can Natural Hair Colors turn hair green?
• How can I minimize the natural scent of khadi Natural Hair Color?
• My result turned out very ashy and cool. What can I do about it?
• My result turned out very warm or reddish. Is there anything I can do about it?