Yep! There sure is. Remember that the skin is a sophisticated, multilayer barrier. The more often you wash it, the more natural oils you remove from its surface. When that happens, the sebaceous gland (where oil is produced) goes into overdrive - it thinks the surface of the skin needs more oil, and this gland takes its job seriously. The result can be even *more* grease and larger crops of acne, the zits resulting from clogging of the pore as the oil tries to get out and the skin cells on top crowd the opening.