Henna treatments with regular dye

Can I use a henna treatment as a conditioner over already dyed hair, or will I run the risk of damaging my hair? I don't want the color, jus the benefits of the henna treatment.

You should refer to the Henna tab for any questions or concerns you may have about using henna. I read in another blog that it's best to let your permanent color grow out first then apply henna yet as I said before head over to the Henna forum for the best and correct answer.

OK. Thanks.