Despite being vital for health, when iron lingers on our skin, it catalyzes a cascade of reactions that can age us from the outside in. Iron residue outstays its welcome, persisting for well over two months on our skin, far beyond our 26-day cellular turnover rate. This lingering presence acts as a beacon for oxidants, particularly when compounded by the iron oxides found in many makeup products. Chances are, if you’re using any sort of color on your skin, it contains iron oxides.
As we age, particularly during and after life's milestones like pregnancy or menopause, our skin's iron content naturally rises, leaving us more susceptible to the ravages of free radicals. These reactive molecules are known to accelerate the aging process, manifesting as wrinkles, thinning skin, and dark spots—all exacerbated under the sun's rays.