It is found under the Skin Detail category in Create-A-Sim (CAS).
The is a custom content (CC) creation by MSQSIMS , specifically designed for The Sims 4 and available on The Sims Resource (TSR) . Released in October 2021, it is a versatile skin detail aimed at enhancing the realism of male Sims from the Teen to Elder life stages. Key Features and Specifications
Because it is an overlay, it does not alter the underlying skin color but instead adapts to it, making it "slider friendly" and compatible with other CAS modifications. Difference Between "Skin" and "Skin Overlay"
It is Base Game compatible and works seamlessly with all EA skin tones. It is also compatible with the HQ Mod for players who use high-definition settings.
Available in four different strengths or opacities, allowing players to choose how subtly or intensely the details appear on their Sim.
MSQSIMS often releases two versions of their creations: a "Skin" and a "Skin Overlay." Understanding the difference is crucial for players: Harry Skin Overlay - The Sims Resource
This overlay is favored for its flexibility and high-quality texture, catering to players who want more detailed appearances without replacing default skin tones.