Women’s Rogaine foam 5%

Hello,

I used Women’s rogaine foam 5% my very first time last night. I put it on at 8:30pm and went to bed at midnight. I’ve always suffered from dark circles around my eyes but when I woke up this morning my dark circles were darker than usual.
I’ve heard that this could happen using rogaine if you put it on right before bedtime. In my case I pou it on 3 hours and a half before going to bed and it still happen.
Has this happened to anyone? How much longer before going to bed should I put it on?
Thank you!