It should help creating more artistic and erotic compositions, improving the framing and lighting balance, as well as more artistic postures and overall vibe.

In realistic Models the more strength the more realistic, in negative Strength it creates some sort of plastic feel to the skin, useful for some unreal effects

In non realistic models the more strength it will force realism not recommended going above 2.0, unless you know what you are doing. Negative Strength makes it more cartoonish