Tan Girl
The stacks
Curated sets, read first.
- 01
Glow Stack
→The skin research set.
GHK-Cu · GLOW · Glutathione
- 02
Recovery Stack
→The repair research set.
Wolverine · CJC + Ipa
- 03
Rest Stack
→The sleep research set.
DSIP · Selank
- 04
Focus Stack
→The attention research set.
Semax · Selank
- 05
Longevity Stack
→The cellular-aging research set.
NAD+ · MOTS-c · GHK-Cu
Find your fit
Take the quiz
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Read First
Short definitions of every compound on the site, with a summary of the research on each. Tap any word to read it in place.
- 01
A natural copper-binding peptide best known from skincare.
- 02
A synthetic peptide studied in animals for tissue and gut repair.
- 03
A coenzyme every cell uses to make energy; levels fall with age.
- 04
The antioxidant your cells make themselves, also sold as a supplement.
- 05
A peptide encoded in mitochondrial DNA, studied for metabolism.
- 06
A synthetic peptide from Russia, studied for cognition and nerve protection.
The letter
A weekly letter.
New guides, stack notes, and what the research is actually saying. Unsubscribe anytime.
The companion
The app that holds the rhythm.
Your routine, in one quiet place. Gentle reminders and a short daily journal, built to fit around a real week.
Download on the App Store →Currently iOS. Android, in time.
A small line, made with intention.
We don't make, ship, or stock anything. Peptides ATX, our partner, handles all of that. We do the reading, explain it plainly, and keep the line small. Sundial keeps your routine in one place.
The full story →