Neurogan vs Divi copper-peptide serum

Two very different formulas

Neurogan publishes a two-ingredient GHK-Cu and water formula with a stated concentration. Divi lists a wider combination including a second peptide, caffeine, humectants and aromatic oils. Comparing only the words “copper peptide” loses most of the purchase-relevant differences.

If you already avoid scented scalp products, Divi’s oils and menthol are a meaningful consideration. If you prefer a focused ingredient list, Neurogan warrants a closer look at the current product and quality information. A shorter list does not automatically establish greater safety.

How to read the evidence

Neurogan’s concentration and laboratory-report links relate to product composition and quality. Divi’s published consumer-perception study describes reported experiences. Neither is a controlled head-to-head comparison of the two bottles in women.

The published GHK-Cu microemulsion study also cannot settle this retail comparison: it used a different delivery system and included mouse experiments. Do not substitute a mechanism story for the result you actually want to know.

Our decision rule

Make scent preference and formula simplicity the first filters, then compare delivery and ordinary cost. If you cannot justify a choice without assuming guaranteed regrowth, pause the purchase and clarify what you expect a cosmetic product to do.