Problem to be solved: To provide a novel skin quality improving agent.
Solution: A filaggrin gene expression promoter, an involucrin gene expression promoter, a PPARα gene expression promoter, a PPARγ gene expression promoter, an endothelin gene expression inhibitor, or a cornified envelope maturation agent, which contains an extract of Passiflora-caerulea (except for its seeds or fruit) as an active component. A skin pigmentation inhibitor containing an endothelin gene expression inhibitor described above. A skin quality improving agent containing either of the above. A method for using the skin quality improving agent described above as a material for various kinds of food and drink, medical and pharmaceutical products, and cosmetics.
Patents