Abstract: An all-in-one liquids applicator includes: (a) an elongated, hollow cartridge housing 11; (b) a cartridge assembly 12 disposable within the cartridge housing 11, the cartridge assembly comprising at least one liquids cartridge 13 and an interior slide 35, the liquids cartridge comprising an open upper end and an opposite, lower end of the liquids cartridge comprising a cartridge liquids aperture 45, at least a portion of the interior slide 35 being slidable into the cartridge 13 from the open upper end of the cartridge 13; (c) an exterior slide 16 that is slidable over the cartridge housing 11; (d) an applicator head portion 15 that is removably attachable to an open lower end of the cartridge housing 11; and (e) a liquid dispensing mechanism 49 that causes liquid to be dispensed from the cartridge liquids aperture 45 into the applicator head portion in response to movement of the exterior slide 16 over the cartridge housing 11.