Aquality Intense Moisturizing Youth Cream by Dr Irena Eris $130.00 AQUALITY is a new level of hydration thanks to γ-polyglutamic acid (γ-PGA), proven to be 5 times* more effective as a moisturizer than hyaluronic acid. Based on the revolutionary γ-PGA, the serum boosts hydration to instantly restore a youthful radiance to your skin. Its specially designed texture releases water droplets upon application to stimulate and relieve tired skin. Add to cart