Send us Fan Mail

Your skin cells talk to each other constantly. To the nervous system, the immune system, the microbiome. And when those conversations start to go wrong (delayed, distorted, or just too noisy to decode) the skin ages faster.

In this episode, I explore one of the most fascinating hallmarks of aging: altered intercellular communication. I explain how skin cells actually send and receive messages, why the skin is an active communication hub rather than a passive barrier, and how peptides work as synthetic messengers in skincare. I also dive into something I find genuinely exciting: quorum sensing, the chemical language bacteria use to coordinate behavior and form biofilms. And quorum quenching: the strategy of cutting those communication lines before the damage is done.

The episode ends with the practical part, what lifestyle, nutrition, and the right skincare ingredients can do to reduce background noise and keep your skin's conversations clear.

Episode resources:

Hallmarks of aging: An expanding universe - Carlos López-Otín

Ensheathed nerve fibres in human skin help communicate external stimuli

Learn more from the previous episodes:

The 19th Century Discovery Behind the Future of Skincare

Zombie Cells Are Aging Your Skin: Here's How to Stop Them

The Hidden Inflammation Accelerating Your Skin Aging

Your Skin's Renewal System: The Real Science of Stem Cells

Shop the skincare we talked about today:

Routine For Acne & Oily Skin

Body-Day Prebiotic deodorant body cream

Connect with us:

Meder by Dr. Tiina Meder

Meder Beauty Instagram

Meder Beauty Facebook

Meder Beauty TikTok

Meder Beauty LinkedIn

Meder Beauty YouTube

Listen to the Meder Beauty Podcast on Apple Podcasts