Sissification involves feminizing a typically male-identified person, often incorporating elements of humiliation or forced feminization. This may include wearing feminine clothing, makeup, wigs, and adopting feminine mannerisms or names.
The practice operates on the dynamic of "forcing" someone into a role, though all activities are consensual. The humiliation element comes from societal gender norms - the "degradation" of being made feminine (problematic as that framing is regarding femininity).
Participants may find appeal in exploring gender expression, the power exchange dynamics, the taboo nature, or specific aesthetic or erotic elements of feminization.
It's worth noting the complex relationship between sissification and views on femininity. Some practitioners and critics observe that the humiliation framework problematically treats femininity as degrading.