These are all ones that I have tried, and that either I use and love, or friends use and have seen great results. All of these vary person to person, you really have to try a few out and see what works the best for you specifically.
This is by far my favorite. I get lash lifts & tints and my lash lady recommended this one to me, and said multiple customers started using it and literally had to trim their lashes they grew so long. Within 3 weeks of using mine were super long, and not just long and thin, they actually grew thicker. Highly recommend this one!

This was actually the first brand I ever purchased when I started using lash growth serums. I’ve tried so many over the years and consistently go back to this one. Purchase here.
Ok, so a friend of mine has been consistently using this and her lashes are super long, after she was getting lash extensions for several years she was left with short broken lashes. within 3 months they’ve grown super long with this stuff. I tried it myself and did notice a difference in length but it made my lash line itchy. I haven’t heard that feedback from anyone else though so I might just be sensitive! Purchase here.
This is a vegan brand and is supposed to be less harsh. started using this and saw results within a few weeks and didn’t experience any side effects or sensitivity. Purchase here.
Have had so many friends rave about this stuff and saw huge results for them. Once I am done with my current tube of revitalash, I want to try this one again. It is extremely pricey though so I just keep putting off purchasing for myself!