Where can I find Defense strengthening in Herdecke?

Defense strengthening can also be found in these cities:

Bochum Castrop-Rauxel Dortmund Gevelsberg Hagen Hattingen Herne Iserlohn Kamen Schwelm Schwerte Unna Witten Wuppertal

You can also find this in Herdecke:

Eye Care Nail Cosmetics Hair Coloring Vitamin C Biotin Cold Bath Bolt Heavy Duty Detergent Liquid Broom Baking Mixtures