Final answer:
To enhance the potency of a topical corticosteroid, it is recommended to apply the preparation to dry skin with gentle rubbing and possibly cover it with an occlusive dressing.
Step-by-step explanation:
To enhance the potency of a topical corticosteroid, the prescriber recommends that the patient applies the preparation to dry skin with gentle rubbing. Covering with an occlusive dressing can also enhance the potency of the corticosteroid. Applying the preparation before bathing or using a humectant does not enhance its potency.