The normotrophic patient with a formerly hypertrophic scar on her knee interestingly had a non‐conclusive score in both patch testing (scoring visual erythema grades of 2 for 1% and 3 for 2% SLS) as well as in the cytokine panel (lower than average for NS secretion of TNF‐α [48.5 vs 249.5 pg/mL], MCP‐1 [120.0 vs 345.8 ng/mL], IL‐6 [6.0 vs 59.1 ng/mL] and IL‐8 [242.0 vs 811.5 ng/mL]). This evidence concerns the gene TNF and Erythema.