Rio Rennalls
Member of the What in the World team who shares personal experience using at-home LED masks and provides anecdotal testimony about perceived benefits.
Best podcasts with Rio Rennalls
Ranked by the Snipd community
Mar 17, 2026 • 11min
Do LED skincare masks work?
David Robert Grimes, Irish scientist and author who critiques the evidence and study design behind red-light mask claims. Rio Rennalls, a team member who shares his personal at-home LED mask experiences. They explore why LED masks are trending on social media. They discuss red versus blue light, biological mechanisms, concerns about at-home device strength and study quality, and regulatory complaints about misleading ads.
