Starting or restarting with makeup after 50 is genuinely confusing, because almost all beginner advice is written for a younger face and most of it adds products rather than ordering them. This page is a buying order instead: what to get first, what to get next, and what to leave until you can say what problem it solves.
Two things on the list are not cosmetics and both outrank most of the cosmetics. A moisturizer, because every makeup problem on mature skin is worse on under-hydrated skin, and the two-minute wait after applying it fixes more complaints than any product does. And a damp sponge, which costs very little and changes the result more than trading up a foundation would — because pressing rather than dragging is most of the technique.
The ordering principle is what fixes the most for the least money and the least difficulty. That is why the sponge is second and the mascara is fifth, which is the reverse of how most kits are assembled.
The whole list is achievable at drugstore prices. Our overall foundation pick is a drugstore product, the best primer in the category is a few dollars, and the most useful tool costs less than a coffee. The one place where spending more genuinely buys something is shade range in concealer, and only if a short range has failed you before.
A note on what this page does not include: there is no primer, no powder, no setting spray, no bronzer, no highlighter, no liner and no shadow. None of them belongs in a starter kit, and several of them work against mature skin.