#hair-health

1 article

**Approach: Human outcome. Palette: warm (B).**

Extreme close-up, slightly high angle, of a woman's scalp parting in her 40s. Dense, glossy chestnut-brown hair is split by a fine comb. Short new hairs rise from the visible scalp skin, and a few strands catch the light. Faces and identity are out of frame. Low golden-hour window light enters from camera left and rim-lights the strands in honey and copper. Shadows stay warm brown, with no blue cast. The shallow depth of field blurs the background hair into soft amber bokeh. A thin steel trichoscopy probe tip sits at the edge of the frame, and a tiny electric green LED glints on its housing as the only accent. The mood is hopeful but scrutinizing, like a clinical check-up with a cautious eye.

NMN 让头发密度提升57%——但有重大隐患

BY NOVA CHEN · 2026年10月29日

NMN 作为长寿爱好者热捧的 NAD+ 前体，首次在人群中用于头发实验。15 位 40‑50 岁女性参与了为期 12 周的试点研究，生长期头发密度从 55.9 提升至 87.7 根/平方厘米，发丝直径也从 75.3 增至 78.8 µm。受试者还报告光泽、弹性和丰盈感都有所提升。但研究缺乏安慰剂对照，样本量极小，且作者与 NMN 供应商有关联。下面我们来看看这些数字能说明什么、不能说明什么，以及谁该保持谨慎。