Bioscreen for cellular responses to Annurca apple-based dietary supplement (AMS) treatment in vitro. Cell survival index, evaluated by the MTT assay and live/dead cell ratio, for human hair follicular keratinocytes (HHFK), human hair dermal papilla cells (HHDPC) and HHFK-HHDPC co-cultures following 24 (a), 48 (b), 72 (c) and 96 h (d) of incubation with the indicated concentration (the range 0.5–3 mg/mL has been explored) of AMS supplement, as indicated in the legend. Results are expressed in line graphs as percentage of untreated control cells and are reported as mean of four independent experiments ± SEM (n = 20). *** p < 0.001 vs. control (untreated cells); ** p < 0.01 vs. control (untreated cells); * p < 0.05 vs. control (untreated cells).