Why do you have a policy that you do not use collagen, elastin and sodium hyauronate as much as possible?
A2. Since all collagen, elastin and sodium hyauronate exist in the dermis of our skin, when you hear that a cosmetic contains those ingredients, you may imagine that the cosmetic may improve the firmness of your skin. However, those ingredients’ normal molecular weights are hundreds of thousand, or millions so that they only stay on your skin like a film. Healthy skin (a skin with a normally functioning barrier) can only absorb ingredients of molecular weights about 1000 or lower. Unhealthy skin (with malfunctioning barrier), such as atopic skin, can absorb ingredients with the size of tens of thousand molecules. However, even such unhealthy skin barely allows low molecular collagen, which has become available recently to penetrate the cornified layer. In addition, collagen may cause trouble when it penetrates the cornified layer of the skin with a malfunctioning barrier. High molecular moisturizers, such as collagen, elastin and hyaluronic acid, cannot be absorbed by healthy skin and
