Jun 06, 2026
Collagen vs NAD+: Which Has Better Evidence for Skin Aging?
A direct comparison of oral collagen and NAD+ research, separating visible human skin outcomes from biomarker and mechanistic evidence.
Read research note →PAG LABS Research Library
The Science
Evidence-first explainers on skin aging, photoaging, collagen, cellular senescence, NAD+ biology, quercetin and resveratrol. Human outcomes, biomarkers, mechanisms and preclinical evidence are labeled separately.
Jun 06, 2026
Anti-Aging Supplements for Skin in 2026: An Evidence Ranking
A transparent ranking of popular skin-aging supplements by direct human skin evidence—not by mechanism, hype or brand preference.
Read research note →Research before product
See exactly what PAG NAD CORE contains.
500 mg NAD+, 250 mg quercetin dihydrate extract and 150 mg Japanese knotweed extract standardized to 98% resveratrol per 2-capsule serving.
View exact-label product page