We Put 50% Chaga In a Moisturizer. Here's What Happened. barrier repair · chaga · hydration · Korean skincare · rosacea · sensitive skin · May 15, 2024 by Cora Nelson Most skincare products include a hero ingredient at 1–2% — enough for the label, not enough to feel. We put Chaga mushroom in a moisturizer at over 50%. Here's what that concentration actually does to reactive, rosacea-prone, and acne-prone skin.