Well Formulated

Notes on skin and life after 40, by Jennifer Sherak

I'm a chemist, and I spend most of my time figuring out what skin needs after 40. This is where I share what works, what doesn't, and what is simply clever marketing, along with the beauty and wellness finds that make life after 40 far more interesting than anyone promised. Subscribe and I'll send the latest straight to you.

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How do you Repair Your Skin After a Summer in the Sun?

Summer took a lot out of your skin. Fall is when we give it back. My exact fall reset: exfoliate, reintroduce peptides, bring back your retinoid if you use one,... Read more...

What a Reiki Facial Actually Is (And Why I Tried One)

I'm a chemist. I think in bond energy and activation energy, not the kind of energy Reiki practitioners talk about. So when a few women in my circle brought up... Read more...

The Case for Cleansing With Oil This Summer

Discover why an antioxidant-rich oil cleanser may protect midlife skin better than foaming cleansers this summer. The science of free radicals, explained. Read more...

SPF Is Only Half the Coverage in Summer

I am not here to talk you out of your sunscreen. Please keep wearing it every single day, rain or shine. That habit is doing real work. But if SPF... Read more...

Peptides vs. Exosomes: What They Are, How They Differ, and What Actually Renews Your Skin

If you have spent any time exploring advanced skincare lately, you have met two words again and again: peptides and exosomes. Both are described as messengers. Both promise renewal. And... Read more...

Woman applying sunscreen to her neck on a sunny summer day — a key step in any skincare routine for women over 40

Summer Skincare Over 40: The Science-Backed Survival Guide

Heat, UV exposure, and humidity don't just make you uncomfortable — they actively break down collagen, impair your skin barrier, and throw your microbiome off balance. In this guide, Sherak... Read more...

Longevity and Skin: What Living Longer Means for Your Skin Health After 40

Longevity is everywhere right now—but what does it actually mean for your skin? At its core, longevity refers to lifespan—the length of time we live. But today, it’s about much... Read more...

Women’s History Month: The Power and Purpose of Women Over 40

Women over 40 are redefining success in business, family, and community. With experience, confidence, and clarity, midlife women are building companies, leading organizations, and creating meaningful impact. Women’s History Month... Read more...

Head Spas for Hair Loss Over 40: The Science of Scalp Health and Midlife Hair Growth

Hair loss over 40 is often caused by hormonal changes, reduced circulation, and slower cellular turnover. Head spa treatments can help by deeply cleansing the scalp, improving blood flow, supporting... Read more...

Winter Skin Barrier Repair After 40: Why Your Skin Feels Dry (and What to Do About It)

Struggling with dry winter skin after 40? Learn how aging affects your skin barrier and discover science-backed strategies to repair and protect midlife skin this February. Explore biotechnology-based solutions from... Read more...

My 2026 Skincare Routine: A Peptide-Powered Guide to Skin Renewal

In 2026, my approach to skincare is simple and intentional. Daily, I rely on the Sherak Skin Renewal System—powered by our proprietary Pentapeptide Matrix™—to support cell renewal, stimulate collagen and... Read more...

Peptides vs. Retinoids for Maturing Skin: What the Science Actually Shows

Midlife skin needs more: more strength, more support, more renewal. In this post, I walk through how peptides and retinoids work through different biological pathways and why using them together... Read more...

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