Can Dissolve Hair =link= - What

Author: AI Research Synthesis Date: October 2023 Abstract Human hair is primarily composed of hard, insoluble keratin stabilized by numerous disulfide bonds and hydrophobic interactions. Its resistance to degradation poses challenges in medical (clogged drains, bezoars), cosmetic (hair removal), and forensic contexts. This paper reviews the spectrum of agents capable of dissolving hair, categorized by their mechanism of action: strong bases (lye), reducing agents (thioglycolates), oxidizing agents (bleach), and enzymatic treatments (keratinases). We conclude that while complete dissolution is achievable, the most effective and safest methods for biological contexts involve a two-step reduction-oxidation process or specific keratinolytic enzymes. 1. Introduction Human hair is a biocomposite of 65-95% keratin proteins, water, lipids, and trace metals. Keratin’s resilience stems from its high cysteine content, which forms inter- and intra-molecular disulfide bonds (–S–S–), analogous to vulcanized rubber. Consequently, "dissolving" hair requires breaking these crosslinks, not merely solvating the polymer.