Peptides are cumulative. Almost nothing here works in week one, and anyone telling you otherwise is selling something.
Across every formula, the single biggest factor in the result is whether you actually took it on schedule. Missed days on a daily formula reset progress more than a slightly low dose does.
Appetite signalling moves in days. Collagen takes weeks. Connective tissue takes longer again. Judge each formula on its own timeline, not against each other.
By week six on a daily formula, you should have something to report. If you have nothing, talk to us before you buy another pen — it is usually a dosing or storage issue.