If you've ever wondered why your skin looks dull no matter how many serums you layer on, the answer often isn't what's missing from your routine. It's what's sitting on top of your skin. Dead skin cells naturally build up on the surface, and while the body sheds them on its own over roughly a 28-day cycle, that process slows with age, sun exposure, and stress. The result is a barrier of dull, dry cells and clogged pores that block product absorption and leave skin looking tired. This is where a good exfoliating cleansing brush earns its place in a daily routine: it clears that buildup in a way fingertips and washcloths alone can't match.