Hair grows about 1 cm a month and nails about 3 mm. Those numbers are set by biology, and no supplement changes the speed — but nutrient shortfalls can quietly slow both below their personal baseline.
Here is which nutrients matter, at what level of evidence, and which of the 13 on our panel are relevant.
- Biotin: clear in deficiency, thin in sufficiency
- Zinc and folate support rapid cell division
- Iron not included; collagen not on the panel
- Hair ~1 cm/month, nails ~3 mm/month — the real clock
Biotin: the headliner, with caveats
Biotin is the nutrient most associated with keratin maintenance in popular culture, and it has clear evidence in documented deficiency. In sufficiency, the evidence for megadose benefits is thin. At 5,000 mcg, our panel sits at the dose most beauty gummies target, with the FDA lab-test warning we print willingly.
Zinc and the B-complex family
Zinc (2.7 mg in our panel, 25% DV) supports protein synthesis and cell division — both essential for tissue growth. B12 (methylcobalamin, 6 mcg, 250% DV) and folate (442 mcg DFE, 111% DV) support the rapid cell division that hair follicles and nail matrices require. B6 (2 mg, 118% DV) is involved in amino-acid metabolism. These are not glamorous headlines, but they are the biochemistry.
Ready when you are — Gelagen ships from the official website with a 60-day guarantee.
Order GelagenThe antioxidant triad: A, C, E
Vitamin A supports cell differentiation, vitamin C is essential for collagen cross-linking, and vitamin E protects cell membranes from oxidative damage. All three are on our panel at moderate, honest doses — not megadoses, because the risk profile of vitamin A at high intake is real and we would rather stay in the safe lane.
What is NOT on our panel, said plainly
- Iron — the single most common nutritional cause of hair loss in women is iron deficiency, and we do not include iron because a gummy format and the taste it creates are poor partners
- Collagen — despite the brand name's echo, our Supplement Facts panel does not list hydrolyzed collagen; the how-it-works artwork claims it, but the panel is the authority
- Hyaluronic acid — same: named in the marketing image, absent from the panel
Those omissions are stated here rather than discovered in a refund email. The ingredients page prints every line from the Supplement Facts, and the lines that are NOT there are as important as the ones that are.
Realistic timelines
Hair: visible improvement requires the new growth to reach a noticeable length, which at 1 cm/month means weeks to months. Nails: at 3 mm/month, a fingernail takes roughly 6 months to grow out fully. A supplement started today affects the growth that has not happened yet, not the hair or nail already there. Set expectations against that clock, and judge Gelagen at weeks 8–12, not week two.
The bottom line
Biotin, zinc, the B-complex and the antioxidant triad support the pathways; collagen and HA are not on our panel despite the artwork. Timeline is biology's, not ours.
This guide is published on the Gelagen official website — the only place our formula, our pricing and our 60-day guarantee all stand behind the same order.
Claim The Gelagen DiscountGelagen is a dietary supplement supporting everyday skin health in healthy adults. It treats no skin condition and never replaces professional dermatological care. Statements on this page have not been evaluated by the FDA.