Creatine has no proven direct link to acne. No clinical study has demonstrated that creatine monohydrate causes breakouts, and the supplement works through an entirely different biological pathway than the hormones typically responsible for acne. That said, there’s a plausible indirect mechanism worth understanding, and some people do report skin changes after starting creatine. Here’s what the science actually shows.
How Creatine Works in Your Body
Creatine gets converted into phosphocreatine inside your muscle cells, where it helps regenerate the molecule your muscles burn for quick energy (ATP). That’s it. It doesn’t act like a hormone, doesn’t bind to androgen receptors, and doesn’t directly stimulate the oil glands in your skin.
This is an important distinction because acne from supplements is usually associated with anabolic steroids or prohormones, which flood your body with synthetic testosterone. Testosterone and its byproducts ramp up oil production in your skin, clog pores, and trigger inflammatory breakouts. Creatine doesn’t do any of that. Its mechanism is confined to energy metabolism inside muscle tissue.
The DHT Study That Started the Concern
Almost all of the worry about creatine and skin comes from a single 2009 study on college-aged rugby players. After a seven-day loading phase of 25 grams per day, followed by 5 grams per day for two more weeks, the creatine group saw a 56% increase in dihydrotestosterone (DHT) after the first week. DHT stayed about 40% above baseline even after two weeks at the lower dose. The ratio of DHT to testosterone jumped 36% after loading and remained 22% elevated at the end of the study.
DHT matters because it’s the androgen most strongly linked to both hair loss and acne. It binds to receptors in hair follicles and oil glands, and high levels can increase sebum (skin oil) production. So on paper, a 56% spike in DHT sounds like a recipe for breakouts.
Here’s the problem: this was one small study with 20 participants (16 completed it), and it has never been replicated. Total testosterone didn’t increase at all, and free testosterone wasn’t even measured. A comprehensive review published in the Journal of the International Society of Sports Nutrition concluded that the current body of evidence does not indicate creatine supplementation increases total testosterone, free testosterone, or DHT. One unreplicated finding in a small group of rugby players isn’t strong enough to draw a causal link.
IGF-1: A More Plausible Connection
There is one hormonal shift that creatine does appear to influence. When combined with resistance training, creatine supplementation increased levels of a growth factor called IGF-1 inside muscle tissue by about 78%, compared to 54% with training alone. IGF-1 is involved in cell growth and repair throughout the body, and elevated levels have been associated with increased activity in the oil-producing glands of the skin.
This connection is indirect and hasn’t been tested specifically for skin outcomes. The IGF-1 increase was measured inside muscle, not in the bloodstream, and the study looked at muscle adaptation rather than skin health. Still, if you’re someone who’s already prone to hormonal acne, even a modest systemic increase in growth signaling could theoretically nudge your skin toward producing more oil. It’s speculative, but it’s the most scientifically grounded pathway between creatine and breakouts.
What’s More Likely Causing Your Breakouts
If you started creatine and noticed new acne around the same time, the timing might be coincidental. People typically start creatine when they’re also ramping up their training, changing their diet, or adding other supplements. Each of those changes can independently affect your skin.
Intense exercise increases cortisol and other stress hormones that stimulate oil production. Sweating during workouts creates a warm, moist environment on your skin where bacteria thrive, especially if you’re wearing tight clothing or don’t wash your face soon after. High-protein diets heavy in whey protein (a common pairing with creatine) have a much stronger documented link to acne than creatine itself, because whey raises insulin and IGF-1 levels more significantly.
One thing creatine doesn’t do is make you sweat more. A systematic review of ten controlled trials found no differences in sweat rate between creatine and placebo groups exercising in the heat. Some studies even found that creatine slightly reduced core body temperature during exercise. So if you’re breaking out after workouts, it’s the exercise itself, not the creatine amplifying your sweat response.
Keeping Your Skin Clear While Using Creatine
Since the direct evidence against creatine is weak, there’s no strong reason to stop taking it just because of a few new pimples. But if breakouts are bothering you, focus on the factors you can control.
- Wash your face after training. Sweat mixed with bacteria and dead skin cells is one of the most common acne triggers for active people. A gentle cleanser within 20 to 30 minutes of finishing your workout makes a real difference.
- Stay hydrated. Creatine pulls water into your muscle cells, which may mildly increase your body’s overall water needs. Dehydrated skin produces more oil to compensate, so drinking enough water supports both your performance and your skin.
- Check your protein source. If you’re mixing creatine into a whey protein shake, the whey may be the actual culprit. Switching to a plant-based protein powder for a few weeks can help you isolate what’s causing the breakouts.
- Don’t touch your face at the gym. Barbells, dumbbells, and benches are covered in bacteria. This is one of the simplest and most overlooked causes of gym-related acne.
If your acne is persistent or severe and none of these adjustments help, the issue is likely unrelated to creatine. Hormonal acne, dietary triggers, and genetics all play much larger roles than any single supplement. You can also try stopping creatine for four to six weeks to see if your skin changes, which gives you a straightforward personal answer that no study can replace.