Galactomyces ferment filtrate is a cosmetic ingredient that was discovered when researchers observed that elderly sake brewers had wrinkled faces but youthful-looking hands, which were in constant contact with sake during the fermentation process (R). It is a proprietary ingredient in Pitera, the cornerstone of SK-II's product line.
| Outcome | Grade | Effect | Studies | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Skin Hydration | 
        C
       | 
 | 
 | |||||||
| Skin Redness | 
        C
       | 
 | 
 | |||||||
| Facial Pores | 
        C
       | 
 | 
 | |||||||
| Skin Smoothness | 
        C
       | 
 | 
 | |||||||
| Skin Barrier Function | 
        C
       | 
 | 
 | |||||||