Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails.

Background: Brittle nail syndrome is a common problem among women and refers to nails that exhibit surface roughness, raggedness, and peeling.

Aim: The goal of this study was to investigate whether daily oral supplementation with collagen peptides alleviates the symptoms of brittle nails and improves nail growth rate.

Methods: In this open-label, single-center trial, 25 participants took 2.