Background: The restoration of collagen and elastin in human dermal fibroblasts plays a crucial role in anti-aging and skin rejuvenation therapies. Numerous studies have examined the effects of various antioxidants on skin health, but there is limited research comparing their combined effects on collagen and elastin synthesis in human dermal fibroblasts. Objective: The objective of this study was to evaluate the individual and combined effects of N-acetylcysteine (NAC), Coenzyme Q10 (CoQ10), Niacinamide (NIAC), Gamma Cyclodextrin (GAMMA), Retinol (RET), Epigallocatechin Gallate (EGCG), and Ellagic Acid (ELA) on collagen type I and elastin synthesis in human dermal fibroblasts (HDFs). Methods: Human dermal fibroblasts were treated with individual and combined antioxidants. The expression of collagen type I and elastin was measured using mRNA analysis, immunofluorescence staining, and matrix protein assays. The study focused on the effects of EGCG in combination with other antioxidants like RET, CoQ10, and NAC to identify synergistic effects. Results: The combination of EGCG + RET and EGCG + CoQ10 showed the most significant increase in both elastin and collagen type I synthesis, surpassing the effects of individual antioxidants. EGCG demonstrated the highest fold change in elastin mRNA expression, while the combination treatments notably enhanced the extracellular matrix restoration in HDFs. Conclusion: The combination of EGCG with CoQ10, Retinol, or NAC presents a promising strategy for enhancing skin elasticity and firmness by promoting both elastin and collagen synthesis. These findings suggest that antioxidant combinations can be developed for effective anti-aging skincare formulations.
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