Under Japan’s Pharmaceutical Affairs Law, Quasi-drugs are a strictly regulated category positioned between cosmetics and pharmaceuticals, requiring rigorous review by the Ministry of Health, Labour and Welfare (MHLW) to ensure safety and efficacy. Eight of Yii’s high-potency, deeply penetrating skincare formulas have earned MHLW Quasi-drug certification, with ingredients and effects thoroughly validated.
High Safety Standards
Yii skincare products pass U.S. FDA-standard allergy testing, free from fragrances, colorants, and mineral oils. The gentle formulas are safe for use around the eye area. Testing uses human cell simulation instead of animal trials, delivering more accurate data and upholding superior safety.
Strict Quality Control
All products are manufactured in Japan’s pharmaceutical-grade GMP facilities, ensuring hygiene, safety, and quality meet regulatory standards from production to packaging. Additionally, the facilities are ISO 16128-certified, guaranteeing the use of natural ingredients throughout the process. From manufacturing to finished product, only rigorously certified facilities and ingredients are used, maintaining the superior quality of our skincare.
Advanced Technology
Powered by Dual-Phase Penetration Technology, combining “fast” delivery and “slow” absorption for optimal results. Nutrients reach the skin’s deepest layers instantly to activate cell repair, while gradual layering restores imbalanced cells—keeping skin resilient against seasonal and climate changes.
