Skin Debris on the Face of the Turin Shroud: A SEM-EDX Analysis

Aim: We have studied the only found three skin debris (P1, P2 and P3) deposited on the Face area of our sample of the Turin Shroud. Methods: P1, P2 and P3 were explored by optical microscopy, by SEM and by EDX analysis. Results: All P1, P2 and P3 are true skin debris, as observed in optic and electronic microscopy; their elementary compositions show organic matter, plus a sulphur peak that corresponds to keratin. P1, P2 and P3 are constituted of layers of corneocytes; in P3, which is certainly a human skin debris, we can observe both the epidermis and some residual dermis.