When it comes to anti-aging, most of us reach for serums and moisturizers before thinking about what’s happening on the inside. But according to neuroscientist Dr. Robert Love, two common supplements could be quietly sabotaging your complexion—making your skin look dull, inflamed, and even prematurely aged.
Dr. Love, who specializes in brain health and Alzheimer’s prevention, shared on TikTok that while supplements can be powerful tools for wellness, “these two can actually make your skin look older.” Here’s what he says to steer clear of—and what to do instead.
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1. Vitamin B12 Supplements
Surprisingly, the first culprit is one that many people take daily. “This one was a surprise to me,” says Dr. Love. “Research out of UCLA finds that those who take a vitamin B12 supplement can have acne. It can increase acne.”
That’s because excessive B12 may alter the skin’s microbiome and trigger inflammation, leading to breakouts and irritation—two things that can make the skin appear older and less radiant.
Instead of taking B12 on its own, Dr. Love suggests opting for a balanced B-complex supplement, which delivers a full spectrum of B vitamins that work synergistically to support healthy energy levels, brain function, and skin health.
“A whole B complex is much healthier for your brain, much healthier for your body—and I believe, better for your skin,” he says.
2. Iron Supplements
The second supplement Dr. Love warns against might be sitting in your multivitamin—iron. “Most people in the United States do not need an iron supplement,” he explains. “Too much iron can create excess free radicals, and that can damage organs in your body—like your skin.”
Free radicals are unstable molecules that accelerate oxidative stress, one of the biggest drivers of visible aging. When your iron levels are too high, it can lead to inflammation, dullness, and a loss of elasticity in the skin.
Dr. Love notes that only a small percentage of people—“about 2% of men and up to 20% of women”—are truly iron deficient. If you eat eggs or meat regularly, you’re likely getting enough.
“Check with your medical professional,” he advises, “but if you’re not deficient, skip the iron supplement to help protect your skin from premature aging.”
The Bottom Line
More isn’t always better when it comes to supplements. Dr. Love emphasizes that unnecessary supplementation can do more harm than good, especially for your skin and long-term health.
Instead, focus on balanced nutrition, targeted supplements your body truly needs, and regular check-ins with your doctor to guide your choices. Because when your cells—and your skin—are in balance, the glow shows.