Collagen is the most abundant protein in the body — the structural “scaffolding” of skin, tendons, bone and connective tissue. It comes up often in both repair research and skincare. Here’s a simple overview.
- What it is: a large structural protein made of amino-acid chains.
- Where it’s found: skin, tendons, ligaments, bone, cartilage.
- Why it’s discussed: it’s central to tissue structure and repair.
What collagen is
Collagen is a protein — a very long chain of amino acids — that twists into strong, rope-like fibers. Those fibers give tissues their tensile strength and structure. Because it’s a protein, it’s made of the same building blocks as peptides, just far larger; see Peptides vs Proteins.
Why it comes up in peptide topics
- Repair research: tissue structure and remodeling are studied with repair-focused peptides like BPC-157 and TB-500.
- Skincare: some cosmetic peptides are described as signaling collagen-producing cells.
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