A LITTLE SELF-CARE, STARTING AT THE ROOTSYour independent hair-care guide ↗
THE FORMULA FILE · DENSITY ALTERNATIVE

The INKEY List
Caffeine Stimulating Scalp Treatment

The affordable non-peptide benchmark. A research review of the ingredients, evidence and everyday trade-offs.

OUR EDITORIAL VERDICT

Our accessible non-peptide comparison option. It is useful if you are open to a caffeine-led routine rather than committed to a peptide ingredient.

MAY SUIT YOU IF

Shoppers comparing a low-cost, fragrance-free scalp-care step.

THINK TWICE IF

Anyone searching specifically for copper or other named peptides.

What is in the formula?

Caffeine · Redensyl · Betaine

The brand states 1% caffeine, 1% Redensyl and 1% betaine. The published list does not name a cosmetic peptide.

Source: current official product list ↗. The bottle you buy remains the final reference.

Our assessment

This product belongs in the comparison because people often shop by the phrase “hair-density serum” before deciding on an ingredient. Including a clearly labelled non-peptide alternative helps answer whether a peptide is actually a purchase requirement.

Its larger bottle should be compared alongside application amount and frequency. Dividing the purchase price by millilitres is a useful first check, but a routine using more product can cost more per month than the bottle price suggests.

For an accessible starting point, compare it with The Ordinary. The decision is caffeine-led care versus a named multi-peptide blend, not two versions of the same formulation. We have not worn either product and cannot promise a particular finish or absence of residue.

Reasons to consider it

  • Large 150 ml bottle
  • No fragrance or alcohol in the checked formula
  • Clearly stated ingredient-complex percentages

Trade-offs to weigh

  • Not a peptide serum
  • Bottle size alone does not establish monthly value
  • Theoretical ingredient mechanisms do not establish a treatment result

What the evidence supports

The formula’s ingredients and percentages are documented by the brand. We did not establish a controlled finished-product trial that demonstrates treatment of female pattern hair loss.

We have not tested this product or measured hair counts. Product placement reflects ingredient transparency and shopping fit, not a claim of superior regrowth. Read our guide to clinical claims.

Routine considerations

The brand describes nightly use on a dry scalp and advises shaking before application. Follow the bottle directions; do not apply to broken or irritated skin.

Buying in the US and Europe

The US product page lists estimated standard delivery of 2–5 business days. The brand also has separate UK and European storefronts; confirm local stock and charges.

Confirm the complete checkout total, exact pack and one-time or recurring purchase selection. Our routine cost calculator can help compare your own numbers.

FOLLOW THE RESEARCH

Sources & further reading

Product pages establish brand claims and label facts. They do not independently validate efficacy. Sources checked 14 September 2026.

  1. The INKEY List: Caffeine Stimulating Scalp Treatment — official product and ingredients
  2. American Academy of Dermatology: female pattern hair loss
  3. American Academy of Dermatology: diagnosis and treatment
Spotted a changed formula or source? Tell us.
PUT IT IN CONTEXT

Also worth comparing.

All formulas ↗
Copper peptide02
Divi Scalp Serum, 30 ml pale green bottle with matching dropper.
Divi30 ml

Scalp Serum

Shoppers who want copper peptides and are comfortable with aromatic oils.

Mid-rangeContains copper peptideScent ingredients
Botanical + peptide03
Vegamour GRO Hair Serum, 30 ml pink bottle with a gold dropper.
Vegamour30 ml

GRO Hair Serum

Shoppers interested in a botanical-and-peptide blend and willing to compare recurring costs.

PremiumNo copper peptide listedScent ingredients