AUR-S01-3030 ml4 INCIpH 4.8–5.6
Serum 01 — Retinaldehyde
$88.000.05% retinaldehyde, encapsulated, pH 5.5.
Lisbon — est. 2019
Evidence,
not theatre.
A laboratory of measured actives. Eight products. Peer-reviewed concentrations. No fillers, no fragrance, no fiction.
Method
How we formulate
- 01
Single-source actives
Every active is sourced from one supplier and one batch. We publish the certificate of analysis with each lot.
- 02
Threshold concentrations
The minimum dose at which an active is documented to work — and the maximum at which irritation begins. We stop at the first number.
- 03
In-house testing
Every formula is stability-tested for 18 months and clinically reviewed against published references before it ships.
The catalog
Eight products. No more.
AUR-S01-30
AUR-S03-3030 ml3 INCIpH 4.8–5.6
Serum 03 — Vitamin C
$92.0015% L-ascorbic acid + ferulic + tocopherol, pH 3.2.
AUR-M01-5050 ml4 INCIpH 4.8–5.6
Cream 01 — Ceramide Barrier
$68.00Ceramide-3 / cholesterol / fatty-acid 3:1:1 ratio.
AUR-SUN-5050 ml3 INCIpH 4.8–5.6
Sun 01 — Mineral SPF 50
$58.00Non-nano zinc oxide 21.6%, tinted, photostable.
On restraint
We sell less, and we explain more.
A short shelf is a discipline. Each new product replaces an old one only if the data supports it. The result is a catalog you can memorize, and a routine you can read in one breath.
StoryJournal
Notes from the lab
12 February 2024 · 5 min read
On retinaldehyde, and why we stopped at 0.05%.
A short defense of the threshold dose.
3 April 2024 · 4 min read
The pH question, answered slowly.
Why our cleanser is acidic, and why your soap shouldn’t be.
22 September 2024 · 3 min read
A short shelf is a discipline.
Eight products, and the case for not adding a ninth.
