What is the principle behind the use of surfactants?

What is the principle behind the use of surfactants? Correct Answer Enhancing the dissolution rate by promoting wetting

Surfactants enhance the dissolution rate by promoting wetting and penetration of dissolution fluid into the solid drug particles. These surfactants are used in a concentration below the critical micellar concentration since above CMC the trapped drug in the micelle structure fails to partition in the dissolution fluid.
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