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 Brush head compatibility Where is the Colgate Connect E1 Smart Electronic toothbrush sold? Changing the brush head What does your Colgate® Connect E1 come with? Orders Comments 0 comments Article is closed for comments.