Carefree Acti-fresh liners, designed to deliver the ultimate freshness throughout your day thanks to a new core thatâ€™s 40% thinner and proven to absorb 2x more than before.* New Carefree Acti-fresh liners have an 8-hour odor control system so all you feel is freshness. Super absorbent to lock fluid away. Our unique process results in a thinner, more absorbent liner that feels as soft as your panties. The fibers in Acti-fresh liners' cover are bonded together like fabric to give you a soft, cotton-like feel that moves with you.