I just bought and installed yellow, cyan and magenta ink cartridges about a month ago. I had HP black ink left. My HP printer admitted it was the wrong brand and said it couldn't guarantee the quality, but there were no printing problems. I've used it a few times this month, printing both documents and full pages and full color images, and it came out great and the ink levels barely went down. I used to buy third party inks and my HP printer would refuse to use them. But I'm glad I took the risk and will definitely buy this mascara again.