I have been using this product just over a month. I didn't see results the first 3 or 4 weeks, and then just over night one day, I noticed a huge difference when I put on mascara. It's been a couple more weeks now, and I am really happy with this serum. I think I'll order another tube! The only thing is this last week I'm noticing all my lashes are clumping when I apply mascara, and it doesn't seem to matter which mascara.
