I take really good care of my hair I deep condition it alot and i use color smart matrix and abba organic hair reconstructer. I don't use any heating tools and I only dye my naturally bright blonde hair black every 3 months. Right now my hair is about 4 inches past my collar bone and i want to grow it out at least a foot or at least long enough so it is at level with my belly button. How long will it take me and what is the least often i can get my ends trimmed? Also any tips to make it grow faster/healthier? Or any hair dye that will do less damage? Thanx for any advice in advance.