I had my doubts about serums, but this one really does work! I tried a natural one previous to this and it did nothing. But I didn't want to use anything that wasn't natural. My hairdresser uses Lashgro and her lashes are so long, so thought I'd give it a go. I reckon it started working after about 4 weeks. I'm in my 40s and I've always had long lashes, but I've noticed they're starting to thin. But this serum has made them even longer and also a bit fuller, so the 'thinning out' has stopped, which I'm pretty happy about 🤩