Our Promise

We care about one thing most: that you actually feel better after using Calm Factor. Everyone’s body responds differently to caffeine, stress, sleep, and supplements, so we want you to have enough real-world time to see how it fits you.

That’s why we’re confident enough to let you try it properly. Try up to 3 sachets from your box, and if it’s not for you, email us for a refund—no questions asked.

Money-back guarantee (14 days)

If you’re not satisfied within 14 days of purchase, email hello@trycalmfactor.com. We’ll guide you through the return, and once the remaining sachets are received, we’ll process your refund.

Founder's Personal Promise

The founder & Matcha Expert, KN Yamazaki, would like to personally thank you and promise you of your satisfaction.