The invention provides a purified polypeptide which inhibits (i) protease production and/or activity of keratinocytes, (ii) inhibits IL-6 production and/or activity of keratinocytes, (iii) inhibits production of phenol soluble modulin alpha 3 from Staphylococcus aureus and/or (iv) inhibits agr production and/or activity by S. aureus. Further provided is a topical formulation comprising the polypeptide. Provided is a recombinant microorganism comprising a vector or polynucleotide encoding the polypeptide. Further provided is a probiotic composition comprising the recombinant microorganism. The invention also provides kits and articles of manufacture comprising the polypeptide and/or the recombinant microorganism.
