Science-first skincare · Skin in your 40s
Firmer-looking skin in your 40s — from the serum that prints every number.
2% Hexapeptide-11, full INCI, and an honest line between what's proven and what's emerging. The whole 3-step routine for $78 — less than one serum from the brands that hide their formula.
Full INCI, with % 60-day money-back Ships from the US
The number nobody shows you
A $90 jar and a $15 serum can carry the same actives, at the same strength.
You can't tell which is which — the label says 'proprietary blend' and the real percentage is buried on page four, if it's published at all. You've been asked to trust a number you were never allowed to see. STET prints it instead: every active, every percentage we're allowed to disclose, before you buy.
The category's quiet trick
'Clinically proven' can still mean barely in there.
A brand can name a star ingredient, then add a fraction of the amount that was actually studied — enough to print the name, not enough to do the work. Or bury it in a 'proprietary blend' so you can never check. Or swap in a cheaper form that doesn't absorb.
So we set one bar and printed it: the active, named; the percentage, stated; proven or emerging, labelled. Most of the shelf doesn't clear that bar — which is the whole reason STET exists.
The mechanism
What it does, in plain terms.
Hexapeptide-11
A messenger peptide that supports your skin's own firmness and elasticity signalling — so skin looks tauter over weeks, not minutes.
EMERGINGHyaluronic acid
Sodium Hyaluronate pulls water into the upper layers. Fine lines look softer because the skin around them is holding more water.
PROVENSodium PCA
A moisturising factor your skin already makes. It locks that water in, so the plumper look lasts through the day.
PROVENThat's the whole mechanism. No 'reverses aging,' because nothing does — only support, measured, and labelled proven or emerging. Never dressed up.
What you get in the set.
Daily Firm Serum
2% Hexapeptide-11 · 30 ml. On clean skin, AM and PM. Press it in.
Daily Firm Eye
Peptide complex · 15 ml. Tap around the orbital bone. A little goes far.
Daily Firm Cream
AM/PM · 50 ml. Seal everything in. That's the whole routine.
Why STET exists
We're a first run. Here's why you can still trust it.
I started STET because I was tired of paying for the jar. Every cream promises the same thing — 'erase', 'reverse', 'miracle' — and not one will tell you how much active is actually inside. A $90 cream and a $15 one can carry the same ingredient at the same strength. You're paying for the box, the name, and the word 'proprietary'.
So we built the opposite. Every active, every percentage we're allowed to print, on the label — with an honest line between what's proven and what's still emerging. No miracle claims, because your skin in your 40s was never a problem to fix.
And yes — we're new. No wall of paid reviews, no stock photos pretending to be customers. Just the formula, the numbers, and a 60-day guarantee that puts the risk on us, not you. Read the label. Decide for yourself. That's the whole idea.
Made under proof
No paid reviews. No stock photos playing customers. You'd be one of the first — and your honest review will live here, unretouched, to help the next woman decide. Certificates available on request.
The honest comparison
STET vs. the $90 jar.
The First Proof Set
The whole routine, for less than one serum elsewhere.
Three peptide steps for skin in its 40s — treat, eyes, seal. Here's exactly what you get, and exactly what's in it.
- Daily Firm Serum · 2% Hexapeptide-11 · 30 mlstep 1
- Daily Firm Eye · peptide complex · 15 mlstep 2
- Daily Firm Cream (AM/PM) · 50 mlstep 3
- 60-day money-back guaranteeincluded
- Free US shippingincluded
Just starting? The serum alone is $42.
Try it for 60 days. Use every drop.
If it isn't for you, send it back within 60 days for a full refund. You keep the bottles. The number on the label is the number in the bottle. That's the whole promise.
Questions, answered plainly.
It's new — why should I trust it with no reviews?
Fair. That's exactly why the guarantee exists: 60 days, full refund, you keep the bottles. The risk is on us, not you. And everything we can prove without a customer — the full INCI, the printed percentages, the certifications — is on this page already.
Why is it cheaper than the big brands?
Because you're paying for the formula, not the jar, the celebrity, or the 'proprietary' mystery. Same class of actives, printed percentages, honest price.
Is this anti-aging?
No. Your skin in your 40s isn't a problem to fix. These support the look of firmness. That's the honest claim, and it's the only one we'll make.
What does 'emerging' mean on the label?
The active has promising but not yet settled evidence. We'd rather tell you that than dress it up as proven.
How soon will I see anything?
Hydration looks better within days. The firmness support from the peptide builds over weeks of daily use — it's a routine, not a one-night fix.
You've read enough labels to know when one's hiding something.
This one hides nothing. The whole routine, every number on it, for $78.
Get The First Proof Set — $78