Start with the product identity
First identify what the product actually is: cosmetic, topical cream, OTC drug, device or another category. Do not infer category from the domain name or advertising alone.
Separate directions from claims
Directions tell you how the seller instructs the product to be used. Marketing claims tell you what the seller wants you to believe it can do. Those are not the same type of information.
Read the entire ingredient list
Front-label callouts usually highlight a few ingredients. The back or side label may contain a much longer list including bases, emulsifiers, preservatives and texture agents. A full review should use the complete label rather than a marketing carousel.
Look for concentrations when they matter
For some active ingredients, concentration is essential for comparing a product with research or regulatory monographs. If concentrations are missing, treat that as a transparency limitation rather than filling in a number from another product.
Check warnings and distributor information
External-use warnings, heat restrictions, damaged-skin cautions and stop-use instructions can matter more to safe use than headline claims. Distributor information also helps distinguish a current label from unrelated look-alike products.