A 3 in 1 product, which promises to nourish, strengthen and lengthen eyelashes over time, and which can also be used as a primer before mascara. Among the main ingredients of this serum are soy proteins, panthenol and hyaluronic acid. I've been using it for a few weeks, and I have to say that I think it helps to strengthen the lashes, but not so much to make them longer; used as a primer, I think it gives a nice effect to the lashes, making them decidedly thicker and longer. It has a light vanilla scent. Furthermore, it has a very affordable price.