Dihydrokaempferol Supports Epidermal Barrier, Dermal Repair, and Enhances Post-Procedure Recovery

The epidermal barrier is essential for skin function, resilience, and tolerance to environmental and procedural stress. Disruption of this barrier is common after cosmetic treatments such as chemical peeling, underscoring the need for ingredients with proven biological and clinical support for barrier recovery. This study evaluated dihydrokaempferol (DHK) using molecular, preclinical, and clinical approaches. Gene expression profiling in keratinocytes and dermal fibroblasts revealed that DHK enhanced barrier-related genes, reduced inflammation-associated markers, and modulated genes involved in extracellular matrix remodeling. Functional assays confirmed antioxidant activity, suppression of stress-induced interleukin 6 (IL-6) release, increased elastin production, and improved fibroblast migration. Clinically, a randomized, placebo-controlled, split-face study following standardized chemical peeling demonstrated that DHK-treated skin showed significant improvements in dermatologist-assessed skin attributes versus placebo. Together, these findings indicate that DHK supports epidermal barrier integrity, modulates dermal repair mechanisms, and enhances recovery from controlled skin stress. The effects observed at the molecular and cellular levels translated into measurable improvements in visible skin quality, highlighting DHK’s potential as a bioactive ingredient.