So what are the ups and downs of eyelash grower products? Depends on how you look it, actually. Pros could include the regrowth of new lashes where none could be seen and strengthening of the lashes you do have as well as fattening and lengthening of lashes. Cons could include that some products cause permanent eye damage and skin discolorations from the application. Finding a product that offers the pros without the cons can be hard. I tried many different products and found that LiLash worked well without discolorations or irritating my eyes. So I guess I am one of the lucky ones that found a product with all the pros and none of the cons.