Last updated: Jun 02, 2025
I've Spent A Lot On Skincare.
I Wish Someone Had Told Me About This In My 20s.
Words by
Maya Laws
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Published on: May 29, 2026
I don't know exactly when it happened. One morning I was just looking at my face in the bathroom mirror, the kind of really looking you do when you're running late and the light is unforgiving — and I saw lines I didn't remember being there before. They weren't disappearing anymore either even if I get a good night sleep.
The first thing I did was what everyone does: I asked around, did some research, and landed on retinol. It's the gold standard. Every dermatologist, every beauty editor, every older woman in my life has used it at some point. I bought a mid-range one and started using it three nights a week like the instructions said.
Two weeks later my skin was flaking around my mouth and nose, red and tight around my eyes, and so sensitized that my regular moisturizer was stinging. Everyone says the purging period is normal, but by week four I looked worse than when I started and I was miserable every night waiting for it to be over.
I tried a gentler formula. Same thing, slower. I tried buffering it with moisturizer first. Still irritated. I eventually accepted that my skin just doesn't tolerate retinol, and quietly felt like I'd lost access to the one thing that was supposed to actually work.
That's where I was when a friend mentioned Darkfin Labs.
She's a biochemist, so I actually listened.
My friend has zero patience for wellness hype. She once spent ten minutes explaining to me why a popular "collagen-boosting" supplement was essentially just expensive glycine. So when she brought up a skincare product unprompted (& said she'd been following the research behind it), I paid attention.
The product is the Longevity Protocol, made by a New York-based biotech company called Darkfin Labs. It's built around their proprietary peptide complex called L-01™. Their claim is oriented around that by your mid-20s, your biological signals that tell your skin cells to produce collagen and repair themselves start to decline, and L-01™ is designed to restore those signals at the cellular level.
What convinced me was that its mechanism is completely different from retinol.
Retinol forces accelerated cell turnover. That's why it causes the irritation, the peeling, the sensitivity. It's essentially stressing your skin into renewal. This product doesn't do that. Instead of forcing cells to behave differently, the peptide complex is designed to restore the signaling environment that healthy young skin produces naturally. Same outcome. No irritation. No barrier disruption. No adjustment period. I could use it daily from day one.
That last part was what really sold me.
After a month of use, here are some things I love and don't love:
I like
The texture: somewhere between a rich serum and a light cream — absorbs quickly, no tackiness, no residue.
Never made me break out, red, or irritated. Barrier feels strong and healthy throughout.
Really simple to use. I dropped three other single-ingredient skincare products in my old routine by the end of week 3.
It really helped with the smile line next to my lips! much more noticeably than any other fine lines
Ingredient transparency. They list all the % on their website. And the list is very impressive with NAD+ and Co Q10 (in my supplement stack too)
I don't like
Relatively high price point comparing to drugstore anti-aging products (they offer a cheaper option if you subscribe)
When you first open it, you have to give the airless pump quite a few squeeze for it to work.
My smile lines are visibly less pronounced and skin tone is more even (after 3 weeks of use)
Week 3 was when something shifted.
My husband noticed before I said anything, which almost never happens. He couldn't articulate what was different. Just that something was.
The area around my eyes started looking different. Not smoothed over in a filled-in way. More like the texture had improved from somewhere underneath. Less crepey and tired.
By week six, the lines around my mouth were less pronounced. Not gone. Not a dramatic transformation but visibly different.
Is it worth it?
If you're comparing it to a single drugstore moisturizer, it's more expensive. If you're comparing it to what most people in their early 30s are actually spending: a serum, a moisturizer, possibly a retinol you keep using on and off, it's genuinely a good deal.
The science is very specific and transparent if you're obsessed with statistical proof.
The founder Annalina Che is a biologist and longevity scientist. Their research includes two independent clinical studies. 100+ participants. Third-party verified. The numbers are very strong evidence: 161% collagen increase, 2× more effective than retinol at reducing wrinkle depth (with VISIA images side to side as comparison), no irritation, safe for daily use on all skin types.
I'm not someone who recommends things easily. But I've been recommending this one.
The Longevity Protocol is available exclusively through Darkfin Labs. Currently 15% off with email signup. 20% off if you subscribe to a 40-day autoship.
Free US shipping. Made in California. Clinically validated by independent studies.
In partnership with Darkfin Labs. We only work with partners that meet our quality standards — products we'd actually use ourselves.
15% Off
