Unchained Reaction - watch online: streaming, buy or rent
Currently you are able to watch "Unchained Reaction" streaming on Discovery+ Amazon Channel, Philo, Discovery +, Dplus Discovery Amazon Channel or for free with ads on The Roku Channel. It is also possible to buy "Unchained Reaction" as download on Amazon Video, Apple TV.
There aren't any free streaming options for Unchained Reaction right now. If you want know when it is streaming for free, click 'Free' in the filters above and hit the notification bell.