In May 2009, Hart opened a candy shop called SweetHarts in Sherman Oaks, California.
Hart commented that it had been her "childhood dream" to own a candy shop.
SweetHarts closed in December 2011 due to a lawsuit by a former employee alleging wrongful termination and racial discrimination, as well as other issues, and afterwards reopened under the same name with new owners.
In 2015 it closed permanently.

In 2015, Hart and her husband started their own fashion line called King of Harts.
In May 2009, Hart opened a candy shop called SweetHarts in Sherman Oaks, California. Hart commented that it had been her "childhood dream" to own a candy shop. SweetHarts closed in December 2011 due to a lawsuit by a former employee alleging wrongful termination and racial discrimination, as well as other issues, and afterwards reopened under the same name with new owners. In 2015 it closed permanently.
In 2015, Hart and her husband started their own fashion line called King of Harts.
Melissa Joan Hart