Skin & Collagen Support

Hydrolyzed collagen peptides are short amino-acid chains that reach the bloodstream intact and signal fibroblasts to upregulate collagen production. Meta-analyses of randomized trials find consistent improvements in skin hydration, elasticity, and wrinkle depth after 8-12 weeks. Bovine and marine collagen both work; type I + III for skin. Tasteless and dissolves easily in liquids.^{[1, 2, 3]}

Vitamin C is an essential cofactor for the enzymes that crosslink and stabilize collagen fibrils — collagen synthesis is impossible without adequate vitamin C. It is also a potent antioxidant that protects against UV-induced oxidative damage. Higher doses (over 1 g) can cause loose stools — split AM/PM if you want to take more.^{[4, 5]}

Oral hyaluronic acid has emerging evidence for skin hydration improvements — small randomized trials show measurable increases in stratum corneum hydration after 8-12 weeks. The molecular weight matters: low-molecular-weight HA (under 50 kDa) has better absorption. Most useful for adults with skin dryness or fine lines.^{[6, 7, 8]}

Zinc is essential for collagen synthesis, wound healing, and skin barrier function. Subclinical zinc deficiency manifests as slow wound healing, acne, or thinning hair. Picolinate and bisglycinate forms are well-absorbed. Do not exceed 40 mg/day for extended periods (chronic high zinc depletes copper).^{[9, 10]}

Astaxanthin is a carotenoid antioxidant from microalgae with documented UV-photoprotective and anti-inflammatory effects in small trials. Skin elasticity and hydration improvements have been reported. Not a sunscreen replacement — use SPF regardless. Fat-soluble; must be taken with a fat-containing meal.^{[11, 12, 13]}