Authenticity Is Not a Costume is a bold, raw, and unfiltered exploration of what it truly means to live real in a world addicted to appearances. In this honest and empowering guide, Allen De Keyser takes you beyond the curated, the performative, and the fake-deep into the sacred ground of personal truth. Through powerful chapters, vivid illustrations, and practical reflection, this book unpacks the masks we wear—online and in life—and teaches how to recognize fake authenticity, stop performing for acceptance, and finally reconnect to who you really are. This isn’t just a self-help book. It’s a call to stop explaining yourself. To stop polishing your pain. To stop editing your essence. If you’re tired of the act and ready to live rooted in truth, Authenticity Is Not a Costume will meet you where you are—and walk with you to who you’ve always been.