Trusted anti-aging guides backed by dermatological research
Honest reviews of popular supplements: what's been tested, what hasn't, and what to watch for.
47 articles
In the US, the FDA does not have the authority to approve dietary supplements for safety and effectiveness before they're sold. Manufacturers are responsible for their products, so independent evidence matters. (U.S. Food and Drug Administration: FDA 101, dietary supplements)
Some supplements have trial data. Meta-analyses of oral collagen found improvements in skin hydration and elasticity, though trial size and quality vary. (Pu et al., Nutrients, 2023)
We review each supplement against published studies, note side effects and interactions, and never invent results or name a winning brand.
Taurine went viral as a longevity supplement after a 2023 mouse study. A 2025 NIH study found levels don't fall with age in people. Evidence, doses, safety and skin.
Shilajit, sea moss and bovine colostrum are trending for skin and aging, but human skin trials are missing. What studies show, real risks like heavy metals and iodine, and what works.
Urolithin A improved muscle and mitochondrial markers in human trials, but skin evidence is mostly lab-based. What it is, the real data, safety, and who might benefit.
Flavanols are a subset of flavonoids — specifically the cocoa, green tea, and apple class with the strongest cardiovascular and cognitive evidence. Here is the nutritional breakdown.
Pterostilbene has 80% oral bioavailability vs resveratrol's under 1%. Here is what that means for longevity dosing — and why most resveratrol supplements are marketing.
Ubiquinol is the reduced, bioavailable form of CoQ10; ubiquinone is the oxidized form. After 40, ubiquinol absorbs 3-8x better. Here is when each form matters.
Collagen supplements don't produce overnight results, but there are specific signs that tell you the supplement is delivering. Here's what to look for in the first 8–12 weeks.
Not all NAD+ supplements are created equal. Here's an honest 2026 ranking based on ingredient quality, clinical research, third-party testing, and real value — not marketing hype.
Both collagen supplements and hormone replacement therapy help rebuild menopausal skin collagen. Here's how they work together, whether you need both, and what to expect.
Liquid NAD and liposomal NAD use different absorption strategies. Here's an honest comparison of bioavailability, cost, and which one actually delivers better results.
NAD+ supplements are marketed heavily to women for energy, skin, and metabolism. Here's what the research actually supports — and what remains unproven.
NAD+ precursors like NR and NMN are marketed as safe, but they do have side effects and some real risks. Here's the honest breakdown of what to watch for.
Oral niacinamide has more clinical evidence than most skin supplements — including real data on skin cancer prevention. Here's what niacinamide pills actually do and who should consider them.
Certain foods, drinks, medications, and habits undermine your collagen supplement. Here's what to avoid — and what to do instead — to get the most out of your investment.
A deep dive into NAD+ and NMN supplements — what NAD+ is, why it declines with age, how NMN and NR work, what the latest research shows, and practical dosage considerations.
Discover spermidine — the natural polyamine that triggers autophagy, the cellular cleanup process linked to longevity — and what emerging research reveals about its anti-aging potential.
Compare bovine collagen peptides and marine collagen head-to-head — absorption, collagen types, research evidence, sustainability, and which is best for your skin goals.
Explore the science behind turmeric's active compound curcumin — a powerful anti-inflammatory and antioxidant with promising anti-aging benefits for skin, brain, and longevity.
Understand how oral vitamin A supports skin health from within, the difference between retinol and beta-carotene forms, safe dosing guidelines, and when supplementation makes sense.
Learn how zinc supports skin health through wound healing, inflammation control, and antioxidant defense — plus how to supplement effectively without common side effects.
Get the honest truth about biotin supplements for skin and hair — what the research actually shows, who benefits, who doesn't, and why mega-doses may not be the answer.
Discover whether oral hyaluronic acid supplements actually work for skin hydration, what the clinical evidence shows, and how to choose the right product for anti-aging benefits.
Oral and topical glutathione modestly lighten skin in small trials; IV glutathione lacks evidence and carries real risks. Benefits, doses studied, safety and FDA warnings.
Learn how CoQ10 supplementation supports mitochondrial energy production, protects against oxidative damage, and improves skin health as levels naturally decline with age.
Dive into the science of resveratrol — the polyphenol behind red wine's longevity reputation — its sirtuin-activating properties, clinical evidence, and how to supplement effectively.
Explore astaxanthin — the carotenoid antioxidant thousands of times more potent than vitamin C — and its remarkable evidence base for skin protection, wrinkle reduction, and anti-aging.
Learn how oral and topical probiotics influence skin aging through the gut-skin axis, reduce inflammation, and improve conditions like acne, eczema, and premature wrinkles.
Discover how omega-3 fatty acids from fish oil reduce skin inflammation, protect against UV damage, and support skin barrier function for visibly younger-looking skin.
What the research says about collagen powders, drinks and capsules for skin: hydration, elasticity and wrinkles, how long to take them, types, side effects and caveats.
Explore how vitamin D deficiency accelerates aging and why optimizing your vitamin D levels may be one of the most impactful anti-aging strategies available.
Which anti-aging supplements have evidence for skin, which don't, and how to take them safely: collagen, vitamins, antioxidants, NAD and more, plus regulation and drug interactions.
The overlooked role of calcium in skin aging, barrier function, and cellular renewal—and why women's unique calcium needs matter for both bone and skin health.
How iron deficiency—even without anemia—accelerates skin aging in women, causing pallor, dark circles, hair loss, and impaired collagen production.
A physician's guide to the most important vitamins for healthy aging, including how they support skin, bones, immunity, and vitality in older adults.
Curcumin, the active compound in turmeric, has potent anti-inflammatory and antioxidant properties that theoretically counter inflammaging. Oral bioavailab...
During menopause, targeted supplementation can partially compensate for estrogen decline: collagen peptides 10-15g daily (rebuilds declining collagen), ome...
For skin-specific benefits, research suggests 2-3g of combined EPA+DHA daily (higher than the 1g general recommendation). EPA is the anti-inflammatory powe...
Does it matter when you take collagen? What meta-analyses show about collagen supplements for skin, why consistency beats timing, and who should be cautious.
Ashwagandha (Withania somnifera) is an adaptogenic herb that lowers cortisol 14-28% in clinical studies—relevant to aging because chronic cortisol elevatio...
Whey protein may trigger acne in susceptible individuals through insulin and IGF-1 stimulation (both increase sebum production and inflammation). Multiple ...
Topical vitamin C delivers concentrated antioxidant protection directly to skin cells—far more effectively than oral supplementation for skin-specific bene...
Medicinal mushrooms contain beta-glucans (immune modulation), triterpenes (anti-inflammatory), and unique antioxidant compounds. Reishi: adaptogenic stress...
For measurable improvement in skin elasticity, the strongest evidence supports: 1) Hydrolyzed collagen peptides (10-15g daily—multiple meta-analyses confir...
If choosing one supplement for all three: hydrolyzed collagen peptides (10-15g daily). Clinical evidence supports collagen supplementation for improved ski...
Glycine is the most abundant amino acid in collagen (every third position in the collagen triple helix). Supplementing 3-5g daily provides direct building ...
Most beauty gummies contain low doses of biotin, vitamin C, vitamin E, and sometimes collagen—often below clinically effective amounts. They also contain 2...
Creatine is best known for muscle performance, but its anti-aging benefits extend further: it provides rapid ATP regeneration in all cells (supporting cell...