I didn't need it till last week when I had an interview at 9am and an exam at 13:00 on the same day which meant that I looked like a racoon from a sleepless night. I honestly didn't believe that it would work especially coz I looked like I had been crying for daaaays. I'm in love now. It was soooo quick. I applied it in the morning after taking a shower and when I got to where I was been interviewed I looked so fresh and I ddnt need to apply concealer. I know this sounds corny but once you try it you'll NEVER go back