These highly concentrated serums are formulated and made in Japan. Each serum addresses a specific skin condition and can be used alone or custom-formulate of up to 3 serums. Best of all, they are made from 100% active ingredients. 0% paraben, 0% scent and 0% colour. I love the texture as it is non-greasy and very hydrating! Unlike those skincare products which will only reside at the epidermis layer while these serums will actually penetrate into the deep skin, showing visible results. They can be used as a reinforcement supplement to your existing skincare or as your main skincare regime.