Where to buy replacement heads? September 11, 2018 08:56 Updated Colgate Connect E1 Smart Electronic Replacement Heads are sold on Colgate.com/Connect website. Related articles Where is the Colgate Connect E1 Smart Electronic toothbrush sold? Brush head compatibility Changing the brush head What does your Colgate® Connect E1 come with? Whitening gel application Comments 0 comments Article is closed for comments.