Is creatine good for your hair? No study has shown that it is. Nobody has found that creatine makes hair thicker, fuller or faster growing, and there is no mechanism anyone has demonstrated by which it would. The question is still worth asking properly, because it usually comes from the opposite fear, that creatine might damage hair, and on that side the evidence has changed recently. The worry traces back to one small study from 2009 that measured a hormone, not hair. The first trial to measure hair directly, published in 2025, found no effect at all. So the honest answer has two halves: creatine is not a hair treatment, and the current evidence gives you no reason to blame it for hair loss either.

That matters because creatine is one of the most used supplements in training, and hair is one of the first things people notice changing. A wrong answer costs you either way. Drop creatine over a hair fear with no evidence behind it and you give up a real performance benefit. Keep taking it while blaming it for shedding that has another cause, and you waste months on the wrong fix while the real cause goes untreated. What follows is what the studies actually found, why the 2009 result still gets quoted, and what genuinely decides how your hair holds up.

Is creatine good for your hair? The short answer

No. There is no trial of creatine as a hair treatment, and no study reports thicker hair, faster growth, less shedding or healthier follicles in people taking it. Creatine is not a hormone and does not bind to androgen receptors. It works by topping up phosphocreatine in muscle, so ATP can be regenerated faster during short, intense efforts. That is a muscle mechanism, not a hair mechanism, and nothing in the research connects the two.

The only hair data we have comes from the other direction, studies asking whether creatine harms hair, and the answer there is also no. The one trial that measured hair directly, published in 2025, found no difference between creatine and placebo on any hormone or any hair measure. So creatine is neither good for your hair nor, on the current evidence, bad for it. It is neutral, and anyone selling it as a hair supplement is selling a story, not a study.

Where the question comes from: DHT and the 2009 rugby study

The hair question exists because of one hormone. DHT, short for dihydrotestosterone, is made from testosterone by an enzyme called 5-alpha-reductase. In people whose follicles are genetically sensitive to it, DHT gradually shrinks the follicles, a process called miniaturisation, and that is what drives pattern hair loss. So any supplement linked to DHT will get asked about hair, and creatine got linked to DHT in 2009.

The study behind it all is worth reading properly rather than through forum summaries. In 2009, researchers at Stellenbosch University in South Africa published a three-week trial in the Clinical Journal of Sport Medicine. Twenty college-aged rugby players took part in a double-blind, placebo-controlled crossover study with a six-week washout period. For seven days they loaded with 25 grams of creatine a day, then took 5 grams a day for a further fourteen days. Blood was drawn at the start, after seven days and after twenty-one days.

What they found was real, and it is worth stating plainly. Total testosterone did not change. DHT rose by 56 percent after the seven-day loading phase and stayed 40 percent above baseline after the fourteen-day maintenance phase. The ratio of DHT to testosterone rose by 36 percent, then stayed 22 percent above baseline. The authors concluded that creatine may act in part by increasing the conversion of testosterone to DHT, and they called for further investigation, noting that the long-term safety of changes in circulating androgens could not be guaranteed.

What the study did not do matters just as much. It never measured hair. No hair counts, no density, no shedding, no scalp photographs, no follicle assessment of any kind. It measured a hormone for twenty-one days in twenty young men and stopped there. Everything about hair loss was inference layered on top of that finding by readers, journalists and forum posters. The authors themselves did not claim that creatine causes hair loss.

There are two more details that rarely survive the retelling. First, the absolute DHT rise was small: the 2021 review that re-examined the numbers reports a rise of about 0.55 nanomoles per litre after loading and 0.40 after maintenance, and DHT stayed within the normal clinical range throughout. A 56 percent rise sounds dramatic; a rise within the normal range is a different statement. Second, the result has never been replicated. In seventeen years, no other study has reproduced that DHT rise.

What the wider evidence says

By 2021, enough studies had measured hormones during creatine use for a proper review. Antonio and colleagues, writing in the Journal of the International Society of Sports Nutrition, examined twelve studies that measured testosterone in people taking creatine. Ten found no change. Two found small increases that stayed within normal ranges. Their conclusion was blunt: the current evidence does not indicate that creatine supplementation increases total testosterone, free testosterone, DHT or causes hair loss or baldness.

The International Society of Sports Nutrition reached a similar position in its 2017 position stand on creatine, which describes creatine monohydrate as one of the most extensively studied sports supplements available. Hair loss does not appear among the side effects it lists. That is not proof that an effect is impossible, but it is a useful check on how seriously the field takes the claim after decades of use by millions of people.

None of this makes the 2009 study wrong. It was a small, short, well-run trial and its finding was real. What the wider evidence says is that the finding does not generalise. One small study with an unreplicated hormone shift is a reason to run a better study, not a reason to warn people off a supplement.

The 2025 trial that actually measured hair

That better study arrived in 2025. Lak and colleagues published the first randomised controlled trial designed to test creatine and hair directly, in the Journal of the International Society of Sports Nutrition. Forty-five resistance-trained men aged 18 to 40 were randomly assigned to either 5 grams of creatine monohydrate a day or a matching placebo of 5 grams of maltodextrin a day, for twelve weeks. Thirty-eight finished the study. Blood was drawn at the start and at twelve weeks to measure total testosterone, free testosterone and DHT. Hair was assessed with a trichogram and the FotoFinder system, measuring hair density, the number of follicular units and cumulative hair thickness.

The result was unambiguous. There were no significant differences between the creatine group and the placebo group on any hormone or any hair measure. DHT did not climb. The DHT to testosterone ratio did not change. Hair density, follicular unit count and cumulative hair thickness were all statistically indistinguishable between the groups. The authors described it as the first study to directly assess hair follicle health following creatine supplementation, and said it provides strong evidence against the claim that creatine contributes to hair loss.

That is the strongest evidence available, and it still has honest limits. Twelve weeks is short, and pattern hair loss develops over years, so a slow effect could hide inside that window. Only young, resistance-trained men took part, so the result does not automatically extend to women or to older men. The trial used 5 grams a day with no loading phase, so it does not test the 25 gram a day loading protocol that produced the 2009 DHT rise. And some of the authors disclose ties to supplement companies, which is worth knowing even though the trial was randomised, double-blind and placebo-controlled. None of those limits changes the headline: the only trial that has ever looked at hair directly found nothing.

Could creatine help hair indirectly?

This is the version of the question that sounds most plausible, and it still does not survive contact with the evidence. The argument runs like this: creatine helps you train harder, training improves sleep and mood, better sleep and lower stress are good for hair, so creatine helps hair. Each step is reasonable on its own. The chain as a whole is speculation, and no study has tested it.

The protein angle is the one most often dressed up as science. Hair is mostly keratin, which is a protein, so protein intake matters for hair. But creatine is not protein. It is a compound your body makes from amino acids and stores mostly in muscle. Taking creatine does not add amino acids to your diet, and it does not change how much protein your hair gets. If someone’s hair looked better after starting creatine, the likelier explanations are better training, a better diet, or coincidence, not the creatine itself.

There is also a timing trap here. Hair grows and sheds in cycles, and shedding shows up about three months after whatever triggered it. So if you start creatine in January and notice more shedding in April, the creatine is the obvious suspect and almost certainly the wrong one. The trigger, if there was one, was something that happened in January, and creatine starting then is coincidence until proven otherwise.

What actually decides how your hair holds up

If creatine is neutral, what is not neutral? Three things do most of the work.

First, genetics and DHT sensitivity. Pattern hair loss is driven by follicles that are genetically sensitive to DHT, and it progresses over years, not weeks. That is why it runs in families and why it follows recognisable patterns, a receding hairline and thinning crown in men, diffuse thinning over the crown in women. No supplement changes your follicles’ sensitivity to DHT.

Second, shedding cycles. Hair does not grow continuously. Each follicle cycles through growth, rest and shedding, and a shock to the system, illness, major stress, a medication change, a crash diet, can push a large number of follicles into the shedding phase at once. The shedding then appears about three months later, which is why people so often blame whatever they started most recently. Normal shedding is about 50 to 100 hairs a day, according to the NHS, so a few hairs in the shower drain is not evidence of anything.

Third, the things with actual evidence behind them. For pattern hair loss, the treatments with the strongest evidence are minoxidil and finasteride, both listed on the NHS hair loss page. Finasteride works by blocking the enzyme that converts testosterone to DHT, which is the same pathway the 2009 creatine study touched. Neither is a casual purchase: both need a proper assessment, and finasteride in particular needs a conversation with a GP or dermatologist about benefits and side effects. That is the honest comparison. The interventions that work on hair are the ones that act on DHT directly, not the ones that might nudge it indirectly for three weeks in twenty rugby players.

If you take creatine and worry about your hair

None of the evidence says you need to stop. But if the worry is getting in the way of your training, there is a cautious middle ground that costs you nothing.

Skip the loading phase. The 2009 DHT rise came from 25 grams a day for a week. A daily dose of 3 to 5 grams reaches the same muscle saturation in about a month without the spike, and the 2025 trial that found no effect used 5 grams a day with no loading at all. There is no performance reason to load, and skipping it removes the one protocol that has ever been linked to a DHT rise.

Take a baseline before you change anything. Same light, same angle, same parting, one photo a month. Memory is a poor judge of hair, and photos taken months apart are the only way to know whether anything actually changed. Judge over months, not days, because shedding lags its trigger by about three months.

Do not stack unproven hair supplements on top of creatine. The supplement shelf is full of products with no hair data behind them, and adding more untested variables makes it harder, not easier, to work out what is happening. If shedding is sudden, patchy, or your scalp is sore or inflamed, see a GP or dermatologist rather than changing supplements. And if you want an intervention with evidence, talk to a clinician about the established options instead of shopping for a powder that promises one.

Frequently asked questions

Is creatine good for your hair?

No. No study shows that creatine improves hair thickness, growth or shedding, and there is no mechanism by which it would. The best evidence says it neither helps nor harms hair.

Does creatine cause hair loss?

No study has shown that it does. The fear comes from one 2009 study of 20 rugby players that found a DHT rise but never measured hair. A 2025 trial that measured hair directly found no effect on hormones or hair.

Does creatine raise DHT?

In one small 2009 study, DHT rose 56 percent after a week of loading at 25 grams a day and stayed 40 percent above baseline during maintenance, while testosterone did not change. Later studies did not repeat the finding, and a 2025 trial found no DHT change at a 5 gram daily dose with no loading phase.

What did the 2025 creatine hair trial find?

Lak and colleagues randomised 45 trained men to 5 grams of creatine or a placebo for 12 weeks, and 38 finished. There were no differences between the groups in DHT, the DHT to testosterone ratio, hair density, follicular unit count or cumulative hair thickness.

Should I stop taking creatine if I am worried about my hair?

There is no evidence that stopping helps hair, because no study links creatine to hair loss. If you are anxious, skipping the loading phase and using 3 to 5 grams a day is the cautious middle ground, and it costs you nothing in performance.

Does creatine make hair grow faster or thicker?

No evidence supports that. Hair growth is set by genetics, hormones and general health, not by muscle creatine stores. Creatine is not protein and does not feed hair follicles.

What actually helps hair if creatine does not?

For pattern hair loss, the options with the strongest evidence are minoxidil and finasteride, prescribed after a clinician’s assessment. For shedding, finding the cause matters more than any supplement, because shedding usually shows up about three months after its trigger.

Sources

• van der Merwe J, Brooks NE, Myburgh KH. Three weeks of creatine monohydrate supplementation affects dihydrotestosterone to testosterone ratio in college-aged rugby players. Clinical Journal of Sport Medicine. 2009;19(5):399-404. doi:10.1097/JSM.0b013e3181b8b52f. PubMed 19741313
• Lak M, Forbes SC, Ashtary-Larky D, et al. Does creatine cause hair loss? A 12-week randomized controlled trial. Journal of the International Society of Sports Nutrition. 2025;22(sup1):2495229. doi:10.1080/15502783.2025.2495229. PubMed 40265319
• Antonio J, Candow DG, Forbes SC, et al. Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show? Journal of the International Society of Sports Nutrition. 2021;18(1):13. doi:10.1186/s12970-021-00412-w. Journal of the International Society of Sports Nutrition
• Kreider RB, Kalman DS, Antonio J, et al. International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. Journal of the International Society of Sports Nutrition. 2017;14:18. doi:10.1186/s12970-017-0173-z. Journal of the International Society of Sports Nutrition
• NHS. Hair loss. NHS

Related reading

• Can Stopping Creatine Reverse Hair Loss?
• What Are the Potential Side Effects of Creatine for Women?
• Can You Gain Muscle From Creatine Without Exercise?