I was optimistic about these pens. Even after reading some of the reviews, I hoped the company had corrected the flaws in these pens. But sadly, that is not the case. The very first pen I tried was the light lilac one. I had a small sentiment that I wrote to go in a thank you card. The pen lasted for about two sentences, then it was done. I gave them three stars because when I tried one of the blue pens, it worked fine. I haven't tried all the pens in this collection, just the two. So, all I can say about this product right now is that it's inconsistent. Some of the pens work and the rest don't. You can take your chances.