Review (5/5): Easy to apply.  No irritation.  Great price.
So far, so good. I have used many different lash serums, including Rodan & Fields. I've only used this product for three days and so far there is no irritation. If you've never used a lash serum before, it is very easy to put on. It's almost like applying clear eye liner. Most lash serums suggest putting on before bed at night. I can never remember when I go to bed, so I put mine on in the morning when I'm applying my makeup. For me, this works fine. I just let it dry for a minute and put my eye liner over it. I have done that routine with this product and it has done fine. As with the other ones I've tried, I will also be using it in my eye brows. In three days I have not noticed a huge difference in the length (I have long lashes anyway), but I have also not noticed any irritation or loss of lashes like I've seen in some. This is also a great price for eye lash serum.