I've been coloring my hair every 3-4 weeks all my life and want to let my natural silver hair show. I'm 56, tired of coloring and at this age my hair is 75% silver. What can I do to safely strip my hair of all the old color and condition afterward. I have let my hair grow to shoulder length because I figured that it would need to be cut afterward, due to stripping damage. I don't want to let my silver roots grow with red below...I'd like to do this all at once. What do you suggest? Thanks so much!