I've been losing my eyelashes for the past year after being diagnosed with Hashimoto's and I was sceptical of Dermalmd Eyelash Growth Serum at first cos these kind of products don't ever seem to do anything for me but my god my lashes look insane after only 4 weeks of continued use every night. I don't know if it's helped grow new hair or if it's grown my current eyelashes but they look like I've got fake lashes on. They look so long and full! I will keep using it just incase they stop growing again. Love this product!