The ingredient difference that matters
The Ordinary’s checked hair formula names two cosmetic peptides but does not list Copper Tripeptide-1. Divi lists that copper peptide as well as Acetyl Tetrapeptide-3. Both also include caffeine, so caffeine alone is not a useful dividing line.
Divi contains tea tree, peppermint and eucalyptus oils plus menthol. The Ordinary’s checked list has no added parfum or those aromatic oils. This is a concrete preference difference; it does not identify an efficacy winner.
Compare the complete purchase
The selected Ordinary bottle is 60 ml; our Divi review covers 30 ml. Compare like-for-like purchase types and the total at checkout. Do not assume the smaller bottle lasts half as long, because application instructions and actual use differ.
For European orders, confirm the local Ordinary storefront and Divi’s destination-specific delivery. Local availability may be a more practical deciding factor than the ingredient story.
Our decision rule
For an open-ended first cosmetic routine, The Ordinary is the useful reference. If your brief specifically says copper peptide, Divi satisfies that ingredient requirement and The Ordinary does not. Neither conclusion is evidence that one will regrow more hair.
Sources & further reading
Product pages establish brand claims and label facts. They do not independently validate efficacy. Sources checked 14 September 2026.
- The Ordinary: Multi-Peptide Serum for Hair Density — official product and ingredients
- Divi: Scalp Serum — official product and ingredients
- 2023 primary study: GHK-Cu delivery in ionic liquid microemulsions

