This site states this specific positioning directly: the brand frames Gelagen as working from within, complementing rather than replacing topical skincare.
This site calls this "a reasonably honest framing for a supplement" in its own words — worth reading that as this site's own assessment of the positioning, not just a repeated brand claim.
This site's own six-step checklist directly recommends pairing it with a consistent skincare routine — worth reading the inside-out positioning as an addition to, not a substitute for, whatever topical routine you already keep.