Build a useful vocabulary
Make a short glossary of amino acid, peptide, protein, ingredient and formulation. These describe different levels of an explanation. When a product page moves between them, check whether the claim still concerns the same thing.
Follow the evidence trail
Begin with an identifiable source, not an isolated screenshot. Read the abstract or official summary, then note the material studied and the questions it can answer. Save a link so that the claim remains checkable later.
Keep categories visible
Write down whether you are reading about a cosmetic, a food or supplement, a research substance or a medicine. This simple habit prevents the word peptide from connecting claims that belong to different settings.
Sources & references
A chemical record identifies a reference, a study reports a defined investigation, and a product label concerns a specific medicine. A supplier catalogue is not clinical evidence.
General education, not personal medical advice. Ask an appropriately qualified professional about a medicine, symptom or treatment question.