ROSMAR KAGAYAKU CONDENSADA and Kojic Whitening Soap both aim to lighten and brighten the skin, but they utilize different approaches. The Condensada soap focuses on 10x instant whitening, scar removal, and anti-aging, while the Kojic Peeling Soap offers peeling and whitening with added benefits like pimple and scar elimination. Both soaps contain ingredients like Glutathione, Collagen, and Alpha Arbutin, which are known for their skin-brightening properties.