Final answer:
The second and most popular type of enzyme peel is known to involve papain, an enzyme taken from papayas, which is effective in exfoliating the skin by hydrolyzing proteins.
Step-by-step explanation:
The second and most popular type of enzyme peel is typically the one that involves the enzyme papain, which is derived from papayas. While the name 'papain' does not end with '-ase', as is common for many enzymes, it follows the older naming convention where enzymes were named based on their source or discovery. Papain is known for its ability to hydrolyze proteins, which means it breaks down proteins into smaller peptides or amino acids. This makes it particularly effective for use in enzyme peels in the skincare industry, as it helps exfoliate the skin by breaking down the proteins that hold dead skin cells together. Because it's derived from a natural source and is effective at exfoliating without being harsh, papain-based peels have gained popularity as an exfoliating treatment.