The Ordinary Lash Serum thoughts?

I love The Ordinary and their products but I’m a little skeptical about buying this right now because almost all the reviews on Sephora are people who’ve received it for free for reviews. Has anyone gotten the chance to try it? if so, does it irritate your eyes or give the sulken eye look or causes discoloration? I only ask because this is what the Grandelashes lash serum did