The primary ingredient is Pitera™ — a saccharomycopsis ferment filtrate that makes up over 90% of the formula. It was discovered when SK-II researchers noticed sake brewery workers had remarkably youthful hands. The full INCI list is minimal by design, keeping the ferment as the hero active. Indie founders researching this benchmark can find ferment-capable OEM labs through the AJ Cosmo Labs iOS app.
Read the full guide on SK-II Facial Treatment Essence 230ml →