Best way to straighten natural hair without chemicals

Kimmie🦄🌸🚶🏿‍♀️ mommy of four • 👣♥️ Kimmie ♥️👣

Hey ladies, What's the safest way to straighten my 4c hair without using chemicals? I want to try a silk press I just don't want my hair damaged in the process. Share you success stories or pics and methods please. This is a pic of my hair.