The best in defense and repair. A multi-tasking genius. Radical Skincare Youth Infusion Serum rejuvenates, and hydrates aging skin, reducing the appearance of fine lines and wrinkles, and brightens the skin for a more youthful appearance. Algae extract helps boost collagen production, firming and tightening skin while 5 % hyaluronic acid hydrates and soothes inflammation. Highlighting plant-based stem cells, this powerful formula helps protect the skin cells and promotes cell turnover. Clinical studies show that after only 6 weeks of use, subjects experienced improved moisture retention, better skin tone, and fewer wrinkles.