Sleep Better in Silk: What the Research Says
There's a reason dermatologists and sleep coaches recommend silk. Here's what the evidence actually shows.
Silk sleepwear has moved from luxury indulgence to something you're as likely to hear a dermatologist recommend as a fashion editor. But what does the evidence say?
The case begins with temperature regulation. Quality sleep requires your core body temperature to drop by roughly 1–2°C. Silk is a poor thermal conductor — it does not absorb heat quickly or release it dramatically, which helps maintain the stable microclimate that supports deeper sleep stages.
For skin, the argument is about friction and absorption. Cotton is highly absorbent — overnight, it draws moisture from your skin and from any serums or night creams you've applied. Silk's tightly woven protein fibres are far less absorbent, leaving your skin's hydration where you put it.
The amino acids in silk — particularly sericin — have demonstrated mild anti-inflammatory properties in laboratory settings. While sleeping in silk will not substitute for a skincare routine, the low-friction, low-absorption environment it creates is genuinely gentler on sensitive skin and hair.
At SILKILINEN, we use Mulberry silk — the finest grade, produced by silkworms fed exclusively on Mulberry leaves. The resulting filaments are longer, smoother, and more uniform than wild silk grades, translating to the characteristic cool, fluid hand-feel that makes a real difference on a warm night.