Dental The main component of keratins in the stratum corneum is A Keratin polypeptide (68kD) B K19 Keratin polypeptide (40kD) C K12 Keratin polypeptide (40kD) D K1 keratin polypeptide (68kD) 💡 Explanation The main component of keratins in the stratum corneum is ✓ Correct Answer: D. K1 keratin polypeptide (68kD)