And an expensive facelift, hair transplant and other operations (fillers too, check image below). Most people are not vitamin-deficient and most deficiencies don't show externally. People often overestimate the needs for vitamins, just like protein (something like only 2-3% people actually need more).

I'm someone who does a full vitamin checkup every 3 months, the only number that had ever been bad was D during winter, and I don't even eat balanced diet, but whatever is available