<s>[INST] Greetings I finished Chemo a couple of weeks ago; Three rounds with 2 wks. off in between for sm. cell lung I am 55 5ft. 3 , 109lbs. I juice 2 x s a day fruit for am liquid cheif salad @ din din I eat very well seafood etc very balanced lots of meat ,not much surger I don t drink. My Query is;..Re: my boob length hair in that my onc. is amaxed that I still have 48% of my hair so,...How soon can I color it as I am a brunet with grey in the front it truley ages me & what should I use ? [/INST] Thanks for your question on Chat Doctor. Yes, you can definitely use color in your hair. No harm in it. But better to use standard manufacturers color. And these artificial colors can sometimes produce skin reaction if you are allergic to it. So better to first apply some color on your skin and if you are not developing any rash, itching etc. than it is safe to apply on hair. So no need to worry much you can apply hair color. </s>