I am very fortunate as I am 47 and have a minimal amount of gray sprouting. I have brown hair though so it tends to pop out at me in the mirror. I had tried chemical permanent dyes and temporary coloring but never really liked the color that came out on my hair. I also hated having grow lines! Also, my hair is fine and the color as it came out of the box, really didn't seem to last long. In just a week or two normal washing and the sun had faded it to some artificial equivalent. I had read a lot on the use of henna and the different companies that produce natural hair coloring. I settled on Surya in the end. I was extremely thrilled when I tried it. My hair actually absorbed the color much, much better than chemical dyes and I can't believe how long it has lasted. It has lightened a bit but it still looks natural and beautiful. No grow out line!!!! No one can tell that I am nearing 50 because of Iherb's wonderful, natural products.
To be fair, my hair is thick, fine, curly and nonoily, so I actually only wash my hair about three times a week to keep from drying it out. The color may not last as long for hair types that have to wash more frequently but I can't see that it would make a great deal of difference.
I don't think I was prepared for how well this dye worked. I have always considered myself a light to medium brunette. I left the dye on for 30 minutes and it worked so well that it was darker than I expected. Next time I will go for the 15 minutes and it should be just right!
