I also would like to confirm the reviews that note hair breakage, brittle dryness, and damage to my hair. I really regret not reading all of the reviews (on other websites) and not thoroughly vetted the product. I did watch one random video of her saying it worked but caused breakage, but discounted it to her hair type. I should have known when Mayraki didn't have any before and after shots from their own research listed on their site, and all the images used were stock without actual visible pictures of their own tested results. I have very healthy and shiny mid-length medium thickness hair, medium brown. I only box color the front sides and have tried to move away from chemicals. I am about 20-30% gray in the front. Like others, I was thrilled to have found Mayraki. I am 4 weeks in now and I have severe breakage all around the hairline (their customer service's suggestion was just leave it in for 30-minutes then rinse to combat the breakage from the strength of the gel) but that didn't make sense, as how can only 30 minutes have results when their suggestion is to leave it on all day/night? Now, 4 weeks in at 1x/day , my roots are deep yellow to mid-red and about a half inch above this (where it was not gray and I could help the gel hitting) it is now black stained with a deep red henna halo at top, where the gel changed the color of my colored hair into a fake deep red no-shine color. It is awful! I really want this to work, but my boyfriend is right, enough is enough. My roots and hair perimeter is very damaged and the rest of my hair is shiny and healthy where not applied. I have stopped, tossed the remainder and the extra bottle (I bought 4 to begin and it is just a sunk cost at this point) and am now going to deep condition the roots and go back to box for the time being while this grows out.