Case Study · Web Design · E-commerce

Siempre21

Siempre21 sells research-grade peptides at wholesale pricing. We designed a dark, clinical store that organizes the catalog by research area and backs every batch with its own certificate of analysis, for a buyer who researches before they trust.

Project Type
Online Store · E-commerce
Year
2026
Services
Web Design, UI, Front-end.
Tools
React · Vite · Supabase
siempre21.com
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Siempre21 homepage, full scroll preview Hover to scroll
Siempre21 in Numbers

A store that had to prove its purity, not just advertise it.

Research-peptide buyers compare suppliers on evidence, not promises. The store had to carry that evidence (purity, traceability, certification) on every screen, without losing the speed of a normal online store.

99.4%
Average HPLC-verified purity across the catalog
50+
Pharmaceutical-grade peptides available
3-5
Days of shipping across Mexico
24/7
Scientific support for research questions

A clinical store, not a neon supplement shop.

The research-peptide space is full of stores that look like gym supplements. Siempre21 needed the opposite: a dark, precise, near-laboratory interface that felt trustworthy to a buyer about to check the certificate of analysis before paying.

The Challenge

Sell a "research use only" product with total legal and scientific clarity without hurting conversion, and organize a catalog of 50+ peptides by research area so every buyer finds theirs in seconds.

Our Approach

A high-contrast dark system with a single acid-green accent, product cards with category badges, and a certificate-of-analysis component (HPLC, mass spectrometry, endotoxins) repeated on every product as proof, not fine print.

From research area to certificate, in three clicks.

The catalog is browsed by research area (metabolic, GLP-1, longevity, endocrine...), each product shows a full sheet with mechanism and research notes, and that specific batch’s certificate of analysis is one click away, not buried in a separate PDF.

siempre21.com/
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Page Home · Siempre21 Hover to scroll
HomeThe purity-and-wholesale-price promise, stated in the first screen.
siempre21.com/catalogo
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Page Catalog · Siempre21 Hover to scroll
Catalog50+ peptides organized by research area.
siempre21.com/producto/retatrutide
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Page Retatrutide · Siempre21 Hover to scroll
RetatrutideProduct page with certificate of analysis and research notes.
siempre21.com/about
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Page The Science · Siempre21 Hover to scroll
The ScienceHow peptides work, explained without jargon.

Science, not marketing.

The palette is nearly monochrome (black and grays) with an acid green reserved only for price, availability, and verified data, never decoration. Condensed display type and mono for specs, like a lab sheet. The "research use only" notice wasn’t hidden away: it became part of the visual system.

Work with us

Your product,
built right.

Siempre21 showed how a noisy category can earn trust through visual precision instead of promises. If your brand sells something people need to verify before they buy, let’s talk.