Really has worked for me.
I've used Rise-N-Shine catalase for 10+ years. I has kept my hair almost entirely at its natural color-- even though I am now in my 60's. I cannot dye my hair because I have had a severe allergic response to all hair color that I have ever tried---even henna. My mother dyed her hair dark brown and she passed away from lymphoma, a cancer associated with dark hair dye. I'm really grateful that there is such a product as catalase extreme, Finally, whenever I have telephoned staff at Rise-N-Shine, they have always been very helpful and nice-- great company!