Dr. Alexander Landfield
Board-Certified Neurologist & Medical Director
Collagen is the most abundant protein in the human body, constituting approximately seventy-five percent of the skin's dry weight. At Rani Beauty Clinic in Renton, WA, Dr. Landfield applies deep understanding of collagen biology to inform treatment decisions that produce the most effective collagen restoration.
Collagen's triple helix structure gives skin its tensile strength and resilience. Three polypeptide chains wind around each other in a rope-like formation that resists stretching while remaining flexible. This structural motif is the basis of skin's ability to maintain its shape against gravity while accommodating the movements of expression and activity.
The body produces at least twenty-eight types of collagen, but types I, III, and VII are most relevant to skin health. Type I collagen provides the primary structural framework, constituting eighty percent of dermal collagen. Type III collagen provides the softer, more flexible component common in youthful skin. Type VII collagen anchors the epidermis to the dermis. Understanding which types decline and at what rate informs targeted treatment strategies.
Collagen production follows a well-characterized synthesis pathway. Fibroblasts, the collagen-producing cells in the dermis, assemble procollagen molecules from amino acids, primarily glycine, proline, and hydroxyproline. Vitamin C is an essential cofactor for the hydroxylation step that enables proper triple helix formation. The procollagen is secreted from the cell and enzymatically processed into mature collagen fibrils that cross-link into the structural network.
Collagen degradation is mediated by matrix metalloproteinases, enzymes that cleave collagen fibrils. UV exposure, inflammation, and aging all increase MMP activity, accelerating collagen breakdown. The balance between synthesis and degradation determines net collagen content, and this balance shifts toward degradation with age.
The one percent annual decline in collagen production after age thirty represents a steady erosion of structural reserve. By age fifty, the skin has lost approximately twenty percent of its collagen. During the first five years of menopause, an additional thirty percent can be lost due to estrogen withdrawal. These numbers illustrate why proactive treatment is essential.
At Rani Beauty Clinic, our collagen-stimulating treatments, RF microneedling, Sofwave, and tretinoin, each work through distinct mechanisms to shift the synthesis-degradation balance back toward net collagen production. RF microneedling creates controlled thermal injury that triggers fibroblast activation. Sofwave delivers focused ultrasound that denatures existing collagen while stimulating new production. Tretinoin directly upregulates fibroblast gene expression for collagen synthesis.
Understanding collagen biology explains why combination treatment outperforms single modalities: each approach stimulates different pathways in the synthesis cascade, producing more collagen than any single mechanism alone.
