The starting point
A peptide is a type of molecule. The name alone does not tell you what a particular product will do.
Start with the building blocks.
Amino acids can join together through peptide bonds. A short chain is called a peptide; longer chains help form proteins. The exact sequence is part of what distinguishes one peptide from another.
A collection of different identities.
The Diosa collection includes different kinds of compounds. Some entries are peptides; others, such as NAD+ and SLU-PP-332, belong to different chemical groups. Similar looking bottles do not make their contents interchangeable.
On each product page, you will find a plain English explanation of the research area, what the cited studies found and what they do not establish. You can also check the exact contents and bottle size. A skin research peptide and a molecule being studied for metabolism answer different questions.
The useful next question.
Instead of stopping at “Is it a peptide?”, ask: which molecule, which formulation, and what information supports this exact product? That is a more precise starting point for reading further.
Go to the source.
General educational information. For individual advice, speak with a qualified healthcare professional.