SLACS 2 is an add-on for SexLab, a middle ground between the older SLACS (SexLab Advanced Cum Stages) and the heavier SCO (Sexlab - Cum Overlays). It applies cum textures through the RaceMenu overlay system. Cum is cleaned based on the timer set in SexLab, when the character swims, or during rain.   You get 6 cum layers for nearly every zone, and when the limit is reached, it starts overwriting already used slots. SLACS 2 uses 21 RaceMenu slots:   Vaginal (Body): 6 slots (