I think mine is starting already. It's like as soon as the weather broke, I started getting the crawlies! I dusted off my bottle of BT last night and applied it and I kid you not, it seemed like my hair in the front instantly started to get the crawly feeling, and no it wasn't just BT dripping down my fo'head lol. I'm going to try to stick w/it for 2 weeks to see if there's any real difference. Outside of that, I've restocked all of my summer staples and I'm ready to get this show on the road.