This Manic Panic semi-permanent hair dye is formed from high quality ingredients and as a result is certain to give you high quality hair color! 100% vegan friendly and PPD free, it actually conditions while it's in. Long-lasting but without the damage and permanent commitment, you can try different shades to suit your mood! Each application lasts up to 6 weeks but can vary based on color selection, base color and hair care. Have questions? Reach out to us at customerservice@manicpanic.com. We're here to help!