Exfoliants are designed to remove dead skin cells from the skin's surface, promoting a smoother and more radiant complexion. They come in physical (scrubs) or chemical (acids) forms. Physical exfoliants use gentle abrasives to manually slough off dead cells, while chemical exfoliants dissolve them through acids like AHA, BHA, or enzymes. Proper use of exfoliants can improve skin texture, reduce dullness, and enhance the effectiveness of subsequent skincare products. Overuse can lead to irritation, so moderation is key.