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Scalp Theory — AHK-Cu Scalp & Hair Tonic — Mycena Skin front label
Authentic copper peptide
For all scalp types
Mycena Skin

Scalp Theory

AHK-Cu Copper Peptide Scalp & Hair Tonic · 30 ml / 1 fl oz

Scalp Theory extends the copper peptide system to the scalp. AHK-Cu copper peptide and salicylic acid help keep the scalp clean and clear of buildup, while caffeine leaves it feeling fresh — a lightweight daily tonic for a balanced scalp and hair that looks thicker and healthier over time.

Hair-specific copper peptideNo fragranceNo colorantsFor all scalp types
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Free US shipping·Ships weekly from Missouri·Small-batch

The ritual

01
Part the hair

Part the hair to expose the scalp in sections.

02
Apply to the scalp

Apply directly to a clean, dry or slightly damp scalp. Do not rinse.

03
Massage in

Massage in and style as usual. Use morning or evening, daily.

Evidence, not hype

The science behind every drop

Most tonics do one thing. Scalp Theory brings together three: a hair-specific copper peptide, a gentle exfoliant to keep the scalp clean, and an invigorating refresh.

AHK-Cu
Copper Tripeptide-3

The hair-specific copper peptide (copper tripeptide-3) — a well-studied peptide and the scalp-focused cousin of the GHK-Cu in Copper Theory. Chosen here for the look and feel of a healthy scalp and fuller-looking hair.

Salicylic Acid
Exfoliant

A gentle beta-hydroxy exfoliant that clears away oil and buildup, keeping the scalp clean and balanced so the tonic absorbs comfortably.

Caffeine
Invigorating

A familiar invigorating ingredient that leaves the scalp feeling fresh and awake — the finishing touch that rounds out the daily tonic.

Read the science →
It's not just what's inside

Chosen with intention, down to the glass

Bottled in amber glass that shields light-sensitive copper peptides, with a precise dropper. Small-batch and batch-coded, so every bottle is traceable. Copper peptides work gradually — this is a long-term scalp-care routine, and consistency matters more than speed.

Amber glass
Shields light-sensitive copper peptides.
Precision dropper
Targeted, low-waste application at the scalp.
Small-batch
Made in careful runs, never mass-poured.
Batch-coded
Every bottle traceable to its run.

What early testers say

Questions, answered

Will it leave residue? +

No. It's a lightweight tonic designed to absorb at the scalp without a greasy finish.

Does it suit color-treated or textured hair? +

Yes — it works at the scalp, so it suits all hair types and textures. Patch test if your scalp is sensitive.

How soon will I see a difference? +

Hair grows in cycles, so give it a full cycle of consistent daily use.

Pregnant or breastfeeding? +

We recommend checking with your doctor before introducing any new product.