Closet Organization Tips for Skincare Formulators
Store heat- and light-sensitive actives—including L-ascorbic acid, retinoids, niacinamide (high-concentration), ferulic acid, and peptides—in opaque, airtight amber or cobalt glass containers. Place them on interior closet shelves *away from doors, windows, and HVAC vents*. Maintain ambient closet temperature below 22°C…