If I could be more specific I would give this product a 3.5. It's a good product for the price but nothing to write home about, and it has some downsides. For reference, I have pretty average eyelashes- they don't have issues with holding curl or drooping, and I prefer more lengthening/defining mascaras over volumizing formulas.
Within the first 15-ish uses of this mascara, I was pretty sold on it. It did a good job of coating my lashes, providing some length, and bulking them up without making them too clumpy. The brush is reminiscent of a smaller, easier to control version of Too Faced Better Than Sex and I can get to all of my lashes without hitting my lid or browbone. It also did a fantastic job of curling the lashes and HOLDING the curl throughout the day. Like I mentioned above, this is not usually an issue for me, but this was noticeably better than other mascaras I've tried recently. The staying power on this mascara is also really good. I've worn it through intense naps and workout sessions without it wearing off or smudging. I clearly remember having a LONG nap, about 5 hours, and when I woke up they were still perfectly curled and defined. I can even use this on the lower lashline without worry of it flaking or transferring. I also like how easy this is to remove- I can wash it off without pulling out all my lashes.
The issue, however, comes with how the formula changed and dried over time. I am used to buying mini sized mascaras or getting them for free as point perks- this is the first full sized mascara I have had in years. With it being full sized, I expected it to last much longer before changing texture or drying out. Man was I wrong- I think I got through about 15 uses (~3 weeks) before this started to get thick and gloopy. Once the texture started to change, it got increasingly more difficult to apply it without becoming clumpy. One wrong move or extra swipe and you go from "voluminous" to "spider legs". I don't know if I got an old tube or something, but I have had it for less than a month and it is markedly changed from when I first opened and used it- it's starting to get to a point that it's unusable because it is so thick. Another minor downside is this can be a pretty heavy formula, and you can definitely feel it on your lashes. I don't mind it, but it's not weightless by a long shot.
If there was no change in texture from the first use, this could potentially be a new favorite mascara- especially for the price point. However, if I'm buying a full tube I want it to last longer than a mini, and this isn't even coming close.