One of the Navarasas.
Shantha is the emotion experience by a content mind filled with peace and with an absence of desire for material comforts.
Detachment is the emotion that best expresses this rasa. The state of Shantha is brought about by liberation from desires and detachment from the material world in combination with strong faith in God.
To portray Shantha, the actor focuses his eyes on the tip of his nose, keeps his eyelids still and half closed and maintains an expression of realistic calm.