Shiseido has developed an ingredient for improving skin quality that protects skin from external stresses such as ultraviolet rays.

Shiseido has discovered that the protein 'Serpin b3' is a factor in blocking the barrier function that protects our bodies from external stresses such as dryness and ultraviolet rays*1 and has independently developed the amino acid derivative “1-piperidine propionic acid,” which is an effective ingredient for inhibiting production of this protein.