If the phrase is related to history, it could be a fragmented reference to the lives of in historical periods, though "on matures" is not standard academic terminology for this subject.

In fashion or photography, this might refer to styling for mature individuals. Key tips for this aesthetic include:

If you encountered this as a specific "guide" title online, it may be a niche or a specific search filter used in media databases. Without more context (such as where you saw the phrase), it is difficult to pin down a singular "proper" manual. 3. Historical or Social Context

Based on the components of the phrase, it most likely refers to one of the following contexts: 1. Style and Aesthetics