Brittle, splitting nails affect up to 20% of the population. While topical treatments address the surface, nail strength is fundamentally determined by the keratin matrix that forms deep in the nail bed — and nutrition plays a direct role in that process.
Multiple studies demonstrate that biotin supplementation at 2500–5000mcg daily can increase nail thickness by up to 25% and reduce splitting. Gelagen delivers 5000mcg, the higher end of the studied range.
Zinc deficiency causes Beau's lines (horizontal ridges) and weakened nail structure. At 2.7mg of zinc citrate, our formula provides 25% DV to support nail keratin integrity.
Nails grow approximately 3mm per month from the nail matrix. This rapid cell division depends on adequate B-vitamin supply for metabolic energy and DNA synthesis. Our formula includes B6, B12, folate and pantothenic acid.
Iron deficiency is a common cause of spoon-shaped nails (koilonychia). Gelagen does not contain iron. If you suspect iron-related nail issues, a blood test is more appropriate than supplementation.
Because nails grow slowly, improvements typically become visible after 2–3 months. Nail hardness may improve sooner than length. Take close-up photos of your nails at Day 1 for comparison.