How long does it take to heat up? Miguel Fox January 19, 2017 09:41 Updated Follow The brush takes approximately 60 seconds to heat up to the default temperature Of 360°F (180°C). Related articles Can I use the Foxybae Straightening Brush on wet or damp hair? My brush won't turn off How long will it take for my shipment to arrive Any tips and tricks? (for best results) How do I change the temperature? Comments 0 comments Please sign in to leave a comment.