The Papa & Filles journal
Understand the ingredients in your routine. Start with copper peptides, scalp care and the research behind our next chapter. Explore our approach to the evidence.
Start here · Copper peptides
Amino acids. Two distinct copper peptides. The difference between an interesting study and a finished formula. Let’s make it clear.
Understand the scienceOne formula. Six featured ingredients.
What each one is, what researchers studied, and what the evidence can tell us.
The ingredient library
What is GHK-Cu, and why is it used in scalp care? Understand its amino-acid sequence, the laboratory research and what a study can tell you about a serum.
Read the guideThe ingredient library
AHK-Cu has been studied in isolated human hair follicles. Learn what the research measured, why the setting matters and how to read scalp-serum claims.
Read the guideThe ingredient library
Caffeine appears in many scalp serums. Explore a follicle study and a human trial, understand their differences and learn what the findings mean for a formula.
Read the guideThe ingredient library
Niacinamide is familiar in facial skincare. Learn why it appears in scalp formulas, what skin-barrier research measured and where the evidence stops.
Read the guideThe ingredient library
Panthenol brings a moisture-care story to scalp formulas. Read what a human skin study measured and why this supporting ingredient deserves attention.
Read the guideThe ingredient library
What is sodium hyaluronate, and why is it in a scalp concentrate? Understand hyaluronic acid, water-binding properties and the limits of skin research.
Read the guideFrom the journal
Beauty & routines
Skincare isn't gendered — your skin responds to ingredients and habits, not gender. Here's what actually determines what your skin needs, explained simply.
Read the guideBeauty & routines
A simple beginner skincare routine in three steps — cleanse, add a serum if you choose, and moisturize. No 10-step ritual or jargon.
Read the guideBeauty & routines
Clean beauty has no single legal definition. A practical, honest way to read the term and know what to look for instead of vague marketing buzzwords today.
Read the guideBeauty & routines
Men don't need men's skincare — they need skincare that fits their skin type. Here's what actually differs between skin types, and what doesn't at all.
Read the guideBeauty & routines
Genderless makeup is simply makeup for every face, without gender rules. A beginner-friendly guide to a few easy products and how to apply them well today.
Read the guideBeauty & routines
A simple order for applying skincare before makeup, with label-first guidance and no performance promises.
Read the guideBeauty & routines
A plain-language look at tightness after washing, with conservative routine guidance and a prompt to seek professional advice when it persists.
Read the guideBeauty & routines
Collagen, palmitoyl peptides and copper peptides are different ingredients. Learn how to read the label and separate ingredient research from product results.
Read the guideBeauty & routines
Topical collagen does not rebuild the collagen in your skin. Here is what it actually does at the surface, how to use one pump, and what we will not promise.
Read the guide
