Product conditions: 1. brought from changi airport in March, at a price of $168 (Tax free); 2. 3o% used, and 70% left. (i.e. 70ml). Price: 168*0.7=117.6, so now sell it at S$100. Tips: if buy a 50 ml from retail store, the price is S$125. Product details: This potent serum is fortified with Sea Buckthorn plus skin-repairing Reishi, irritant-soothing Chaga and Cordyceps mushrooms, long used in Chinese medicine to heal, promote longevity and improve health. Used faithfully, skin is transformed from reactive to resilient and from stressed to soothed to reveal a healthier, more radiant appearance.