A composition for inhibiting PAR2 activation of keratinocytes is disclosed as comprising a vitamin B3 compound, an N-acyl amino acid compound, and a Laminaria Saccharina extract. In one embodiment, the composition for inhibiting PAR2 activation of keratinocytes comprises niacinamide, N-undecylenoyl-L-phenylalanine, and a Laminaria Saccharina extract. In response to the technical problems identified in the background, the present invention may take other forms including methods for inhibiting PAR2 activation of keratinocytes.