4COMPLEXION's Substack

4complexion.substack.com

4COMPLEXION's Substack is a science site on 4complexion.substack.com, in English, funded by its readers through Substack; no supporter count is published.

A Substack by cosmetic chemist writing as 4complexion, decoding skincare science, product claims and dermatology studies for readers, in English.

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Latest posts

Formulated Right? October Edition2026-10-14
Why I didn't want to write about DNA repair enzymes2026-10-08
Byoma Longevit-8: a £22 longevity GHK-Cu serum that isn't blue, and a study nobody can read yet2026-09-20
Shapewear for Your Under-Eye: The Ordinary's Lacto-PDRN Eye Cream, Decoded2026-09-10
What I am writing when I get back2026-07-23
Epii HPT6: Sorry, It Won't Rebuild Your Skin2026-07-19
Shiny, not dewy: how to keep oily skin calm in a heatwave2026-07-11
No, ANUA Azelaic acid serum isn't a scam2026-07-08

From the site's feed, read 2026-10-30.

Pages

20 pages indexed; the pages that lead the site by its internal links:

I'm a cosmetic chemist. Stop blaming 'pore-clogging' ingredients. Here's what really clogs skin, and how to clear it.

https://4complexion.substack.com/p/im-a-cosmetic-chemist-stop-blaming

Your "dark spot" serum won't fix those red marks. Here's what will.

https://4complexion.substack.com/p/your-dark-spot-serum-wont-fix-those

Fungal Acne: Everything You Need to Know (Backed by Science, Explained Like a Friend)

https://4complexion.substack.com/p/fungal-acne-everything-you-need-to

No, Tretinoin Isn't Killing People. Reading the Papers.

https://4complexion.substack.com/p/no-tretinoin-isnt-killing-people

"Anti-ageing" creams won't fix menopausal skin. Here's what actually does.

https://4complexion.substack.com/p/anti-ageing-creams-wont-fix-menopausal

Your melasma serum isn't working. Here's why.

https://4complexion.substack.com/p/your-melasma-serum-isnt-working-heres

Byoma Longevit-8: a £22 longevity GHK-Cu serum that isn't blue, and a study nobody can read yet

https://4complexion.substack.com/p/byoma-longevit-8-a-22-longevity-ghk

Shiny, not dewy: how to keep oily skin calm in a heatwave

https://4complexion.substack.com/p/shiny-not-dewy-how-to-keep-oily-skin

Does Your Skin Really "Absorb Everything"?

https://4complexion.substack.com/p/does-your-skin-really-absorb-everything

Epii HPT6: Sorry, It Won't Rebuild Your Skin

https://4complexion.substack.com/p/epii-hpt6-sorry-it-wont-rebuild-your

Your 30s are not the decline they're selling you.

https://4complexion.substack.com/p/your-30s-are-not-the-decline-theyre

Why I didn't want to write about DNA repair enzymes

https://4complexion.substack.com/p/why-i-didnt-want-to-write-about-dna

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