I am a young 50 with light brown wavy fine shoulder-length layered hair that is very grey in the crown and sides, above the ears. I have to color every 3-4 weeks. Used to get color and highlights in salon but it got so pricey that I took things in my own hands. Tried Excellence creme, Feria and Clairol permanent dyes and then foiled in highlights on the crown and around my face. Now that I have discovered Zotos Age Beautiful I still have to color every 3-4 weeks but I love this product - my hair is so healthy and shiny - no one can believe that I do anything to it because it looks so natural. There is no amonia smell or scalp sensitivity like I have experienced with other products. I use 6N and 7N - the dark blonde on my crown regrowth and the light brown on the regrowth layers underneath. I squirt it into the roots with a bottle and then pull it through the strands with a short stiff brush to create streaks and not form a hard line. I add foil highlights every couple of months to brighten up around my face. If you color often and want gentle non-brassy results, give this a try. I use the 30 percent Age Beautiful developer and get great results. Love this product!!