Testosterone cream does work for raising low testosterone levels, and for most men with clinically confirmed deficiency it delivers measurable improvements in lean body mass, sexual function, and mood. The cream is one of several transdermal options, alongside gels and patches, and it shares most of their benefits and risks. But “effective” is doing a lot of heavy lifting in that sentence, because the real-world picture involves skin absorption variability, a surprisingly high dropout rate, and side effects that range from mild skin irritation to fertility suppression.
How Testosterone Cream Gets Into Your System
Testosterone cream is rubbed into the skin, where the hormone passes through the outer layers and enters the bloodstream gradually. How fast and how much gets absorbed depends heavily on where you apply it. Research on scrotal application found that a 25 mg dose produced a swift, dose-dependent spike in blood testosterone, peaking in roughly two to three hours and maintaining physiological levels for about 16 hours.1PubMed. Pharmacokinetics of testosterone cream applied to scrotal skin Scrotal skin is thinner and more vascular than skin on the arms or torso, which is why it absorbs the hormone much more efficiently and at a fraction of the dose needed elsewhere.
Non-scrotal sites like the shoulders or upper arms require substantially higher doses to achieve the same blood levels. An older pharmacokinetic comparison of scrotal versus non-scrotal delivery systems found roughly a 13-fold difference in permeation rate, meaning the non-scrotal route had to push through far more product to deliver a comparable amount of testosterone into the bloodstream.2PubMed. Transdermal testosterone delivery: comparison between scrotal and nonscrotal delivery systems This matters practically because many commercial testosterone creams and gels are designed for non-scrotal application, so the listed dose on the tube or packet accounts for that lower absorption rate. If your doctor prescribes a scrotal cream, expect a much smaller amount of product per application.
Body Composition Changes
One of the most consistent benefits of testosterone replacement, whether by cream, gel, or injection, is a shift in body composition toward more lean mass and less fat. In a 90-day trial of hypogonadal men using testosterone gel, the group receiving 100 mg per day gained about 2.7 kg of lean body mass while losing roughly 1 kg of fat.3PubMed. Transdermal testosterone gel improves sexual function, mood, muscle strength, and body composition parameters in hypogonadal men The gains in lean mass and losses in fat correlated with the testosterone blood levels each man achieved, suggesting that the more effectively the cream or gel delivered the hormone, the bigger the body-composition shift.
These changes continue building over time. A longer study tracking men with testosterone deficiency found that lean mass increased about two percent at 12 months and roughly four and a half percent at 24 months, with the arms and legs gaining proportionally more muscle than the trunk. Fat mass dropped about four percent at one year and nine percent at two years.4PubMed. Effects of testosterone treatment on body composition in males with testosterone deficiency syndrome These are not bodybuilder-level transformations, but for men who had been losing muscle and gaining visceral fat due to low testosterone, the improvements are functionally meaningful: stronger legs, easier time with stairs and daily tasks, less central obesity.
Sexual Function and Libido
If there is a single benefit that drives most men to ask about testosterone therapy, it is sexual function. The evidence here is solid but comes with caveats. A review of the literature found that testosterone therapy consistently improves libido in men whose levels are genuinely low, with no additional improvement once blood testosterone is brought back to normal range.5PubMed Central. Testosterone Therapy Improves Erectile Function and Libido in Hypogonadal Men For erectile dysfunction, the picture is more nuanced: testosterone tends to help men with mild ED but is less useful when the problem is severe, which usually means other factors like vascular disease are in play.
A study specifically evaluating testosterone gel found that the biggest improvement in sexual function was in erectile function itself, while sexual desire and orgasmic satisfaction showed smaller, non-significant changes.6PubMed. Testosterone gel monotherapy improves sexual function of hypogonadal men mainly through restoring erection: evaluation by IIEF score A year-long trial using a transdermal testosterone system showed that when testosterone levels were normalized, nocturnal erections were more frequent, lasted longer, and had greater rigidity compared to a withdrawal period when testosterone dropped again.7Journal of Urology. Improvement of Sexual Function in Testosterone Deficient Men Treated for 1 Year with a Permeation Enhanced Testosterone Transdermal System In other words, bringing testosterone back to normal does reliably restore erectile function in men whose dysfunction was driven by the deficiency. But if your erections are poor because of poor blood flow, nerve damage, or psychological factors, testosterone cream alone probably will not fix the problem.
Mood and Energy
Many men with low testosterone describe a fog of low motivation, flat mood, and fatigue that lifts noticeably once treatment begins. Trial data supports this: in hypogonadal men using testosterone gel, sexual function and mood improved maximally within the first 30 days and then plateaued, without meaningful differences between dose groups once testosterone was in range.8The Journal of Clinical Endocrinology & Metabolism. Transdermal Testosterone Gel Improves Sexual Function, Mood, Muscle Strength, and Body Composition Parameters in Hypogonadal Men That early plateau is worth noting: once your levels are restored, pushing them higher does not keep improving how you feel.
Testosterone therapy’s mood effects extend beyond men. A pilot study in peri- and postmenopausal women using transdermal testosterone found that mood symptoms improved more than cognitive symptoms, with about 55 percent of women reporting improvement in crying spells and 56 percent reporting improvement in loss of interest in activities after four months. Memory problems, by contrast, were the least responsive, improving in only about a third of women.9PubMed Central. Effect of transdermal testosterone therapy on mood and cognitive symptoms in peri- and postmenopausal women: a pilot study This was a small, uncontrolled study, so the findings should be taken cautiously, but they align with a growing interest in low-dose testosterone for women’s well-being.
Testosterone Cream for Women
Testosterone is not just a male hormone, and its use in women, particularly for low sexual desire after menopause, has been studied more rigorously than many people realize. A large systematic review and meta-analysis found that testosterone significantly increased sexual desire, arousal, orgasm, and overall satisfaction in postmenopausal women compared to placebo, while also reducing sexual distress.10The Lancet Diabetes & Endocrinology. Testosterone therapy for women: a systematic review and meta-analysis The doses used in women are much lower than those prescribed for men, and the delivery method matters: oral testosterone raised LDL cholesterol, but non-oral routes like creams and patches did not affect lipid profiles significantly. The most commonly reported side effects in women were acne and increased hair growth, but no serious adverse events were recorded.
One important limitation is that the same meta-analysis found no meaningful effects on body composition, musculoskeletal variables, or cognition in women, though the data for those outcomes was thin. The evidence base for testosterone in women is strongest for sexual function and weakest for everything else, which is why most clinical guidelines that support its use in women restrict the recommendation to treating hypoactive sexual desire disorder specifically.
Skin Irritation and Application-Site Reactions
The most common complaint with any topical testosterone product is what happens at the skin where you put it. Creams tend to cause less irritation than patches, which use adhesive and sometimes permeation enhancers that can provoke allergic contact dermatitis. In a head-to-head comparison, scrotal transdermal systems produced almost no confirmed allergic reactions, while non-scrotal patch systems triggered allergic contact dermatitis in about 12 percent of users within 12 days.11PubMed. Allergy and topical irritation associated with transdermal testosterone administration: a comparison of scrotal and nonscrotal transdermal systems Moderate skin irritation was also far more common with non-scrotal patches (32 percent) than with scrotal application (5 percent).
Even among non-scrotal products, irritation varies a lot by formulation. A comparison of two transdermal systems found that one caused no moderate erythema (redness) after repeated application to the same site, while the other caused moderate redness in a third of application sites.12Clinical Therapeutics. Comparison of the skin irritation potential of two testosterone transdermal systems: an investigational system and a marketed product Creams and gels generally fare better than adhesive patches because there is no glue pulling at the skin when removed, but some men still experience dryness, redness, or itching. Rotating application sites helps, though with less-irritating formulations this may not even be necessary.
Blood Count Changes and Polycythemia Risk
Testosterone stimulates the bone marrow to produce more red blood cells. This is a normal physiological effect but can become a problem if the red blood cell count climbs too high, a condition called polycythemia. In trials of transdermal testosterone, researchers consistently observe increases in hematocrit and hemoglobin.8The Journal of Clinical Endocrinology & Metabolism. Transdermal Testosterone Gel Improves Sexual Function, Mood, Muscle Strength, and Body Composition Parameters in Hypogonadal Men In most users these increases stay within normal ranges,13PubMed. Medication adherence and treatment patterns for hypogonadal patients treated with topical testosterone therapy: a retrospective medical claims analysis but the risk of clinically significant polycythemia is real, which is why periodic blood work is standard during testosterone therapy. The risk is generally lower with creams and gels than with injections, because transdermal delivery produces steadier blood levels without the high peaks that intramuscular shots create.
Cardiovascular Safety
For years, the cardiovascular safety of testosterone was a genuine open question, fueled by a few observational studies and early trial signals that suggested increased heart attack and stroke risk. That picture has largely been resolved. The TRAVERSE trial, a randomized study of over 5,000 middle-aged and older men with hypogonadism and existing cardiovascular disease or high risk for it, found that testosterone treatment did not increase the rate of major cardiovascular events. About seven percent of men in both the testosterone and placebo groups experienced a primary cardiovascular event over a median follow-up of about three years.14PubMed. Cardiovascular Safety of Testosterone-Replacement Therapy However, the testosterone group did show higher rates of atrial fibrillation, acute kidney injury, and pulmonary embolism, so cardiovascular safety does not mean zero cardiovascular consequences.
A 2024 meta-analysis pooling data from over a hundred trials and more than 15,000 subjects confirmed that testosterone replacement was not associated with an increased risk of major adverse cardiovascular events overall.15PubMed. Cardiovascular safety of testosterone replacement therapy in men: an updated systematic review and meta-analysis That said, the relationship between testosterone and cardiovascular risk is not simple. In men with established heart disease or significant risk factors like diabetes, the benefits of treatment need to be weighed against individual risk.16PubMed Central. Is Testosterone Replacement Safe in Men with Cardiovascular Disease?
Prostate Concerns
The fear that testosterone therapy causes prostate cancer has been a persistent anxiety since the mid-twentieth century, and it remains a common reason men hesitate about treatment. Current evidence suggests the worry is overstated but not completely groundless. Testosterone therapy does cause a small, early rise in PSA (prostate-specific antigen), the blood marker used to screen for prostate issues. Data from the TRAVERSE trial showed that PSA levels rose modestly in the testosterone group compared to placebo, with the biggest difference appearing at 12 months and then leveling off, so that by 36 and 48 months there was no significant difference between the groups.17JAMA Network Open. Prostate Safety Events During Testosterone Replacement Therapy in Men With Hypogonadism: A Randomized Clinical Trial
A meta-analysis of 26 trials likewise found that the overall change in PSA after starting testosterone was trivially small, around 0.10 ng/mL, and this result held regardless of the mode of administration, patient age, or treatment duration.18PubMed. Endogenous and exogenous testosterone and the risk of prostate cancer and increased prostate-specific antigen (PSA) level: a meta-analysis Still, testosterone therapy is contraindicated in men with known prostate cancer, and regular PSA monitoring and digital rectal exams are recommended during treatment.19PubMed Central. Rising PSA during Testosterone Replacement Therapy The PSA bump is not a sign of cancer forming; it most likely reflects increased prostate tissue metabolic activity under the influence of restored testosterone. But because PSA is used for cancer screening, even a small artificial rise can complicate interpretation and trigger unnecessary biopsies if your doctor is not aware you are on testosterone therapy.
Bone Density: A Surprisingly Mixed Story
You might assume that testosterone, given its role in maintaining bone, would straightforwardly reduce fracture risk. The evidence is more complicated than that. At the tissue level, testosterone cream and gel do appear to help. In men using 100 mg per day of testosterone gel, bone mineral density increased at both the hip (about one percent) and spine (about two percent) over the study period.20PubMed. Effects of transdermal testosterone gel on bone turnover markers and bone mineral density in hypogonadal men A separate trial in older men with low bioavailable testosterone found that the testosterone group gained a small amount of bone at the femoral neck while the placebo group lost bone, a statistically significant difference.21The Journals of Gerontology: Series A. Effects of Transdermal Testosterone on Bone and Muscle in Older Men With Low Bioavailable Testosterone Levels
But density is not the same as fracture prevention. A large randomized trial published in the New England Journal of Medicine found that men receiving testosterone actually had a higher fracture rate than those on placebo: about 3.5 percent versus 2.5 percent over roughly three years of follow-up.22PubMed. Testosterone Treatment and Fractures in Men with Hypogonadism The reasons for this paradox are not fully understood. It is possible that men on testosterone became more physically active and thus more exposed to falls, or that the density gains in specific skeletal regions did not translate into whole-skeleton resilience. Whatever the explanation, this result serves as an important reminder that testosterone cream should not be prescribed primarily to prevent fractures. The bone-density improvements are real but do not guarantee fewer broken bones.
The Fertility Problem
This is one of the most important side effects that men considering testosterone cream often do not hear about until it is too late. Exogenous testosterone, regardless of the delivery method, suppresses your body’s own hormone signaling chain. Specifically, it tells the brain to stop sending the signals that drive sperm production. The result can be a dramatic drop in sperm count, sometimes to zero.23PubMed Central. Testosterone Is a Contraceptive and Should Not Be Used in Men Who Desire Fertility This effect can last months after stopping therapy, and in some men, full recovery of sperm production never occurs.24PubMed. Suppression of Spermatogenesis by Exogenous Testosterone
If you are a man who wants children now or in the foreseeable future, testosterone cream is the wrong treatment for low T. Alternative medications like clomiphene citrate or human chorionic gonadotropin can raise testosterone levels while preserving or even stimulating sperm production, and these should be discussed with your doctor instead. The American Urological Association’s guideline on testosterone deficiency explicitly addresses this, advising clinicians to evaluate fertility goals before starting any form of testosterone replacement.25PubMed. Evaluation and Management of Testosterone Deficiency: AUA Guideline
Secondary Exposure to Household Members
One risk unique to topical testosterone that does not exist with injections or pellets is the possibility of unintentional transfer to other people, especially children and female partners. Testosterone cream sits on the skin surface and can rub off through direct contact or contact with clothing, towels, or bedding. In children, even small amounts of transferred testosterone can trigger premature puberty, accelerated bone maturation, and behavioral changes. The risk is well-recognized enough that the FDA requires a black-box warning on all topical testosterone products sold in the United States. Researchers have specifically examined the transferability and variable absorption of topical testosterone creams in children and adolescents, underscoring the need for careful handling after application.26PubMed Central. Risk of transferability and variable absorption of topical testosterone creams in children and adolescents Practical precautions include washing your hands immediately after application, covering the application site with clothing once the cream has dried, and avoiding skin-to-skin contact with others for several hours.
Cream Versus Injections and Other Forms
Testosterone cream is one option in a lineup that includes gels, adhesive patches, intramuscular injections, subcutaneous pellets, and nasal gels. Injections typically deliver higher doses and produce higher peak blood levels than transdermal products, which can translate into greater musculoskeletal benefits for some men.27PubMed Central. Injection of testosterone may be safer and more effective than transdermal administration for combating loss of muscle and bone in older men Total and free testosterone levels tend to be significantly higher in men receiving injectable testosterone than in those on gel or pellets.28Sexual Medicine. Comparison of the Effects of Testosterone Gels, Injections, and Pellets on Serum Hormones, Erythrocytosis, Lipids, and Prostate‐Specific Antigen But higher peaks also come with bigger troughs between doses and a greater risk of polycythemia, which is why some clinicians prefer the steadier levels a cream provides.
Creams have a practical advantage in convenience: you apply them at home daily without needles. They also cause less skin irritation than adhesive patches. On the flip side, they require daily commitment, carry the secondary-exposure risk discussed above, and may not achieve high enough blood levels for men who need a more aggressive replacement. The “best” form of testosterone replacement is really a conversation between you and your doctor about your lifestyle, your goals, your risk profile, and frankly, what you will actually stick with.
The Adherence Problem
Sticking with daily topical testosterone turns out to be surprisingly hard. A retrospective analysis of medical claims found that by six months, only about 35 percent of patients prescribed topical testosterone were still filling their prescriptions. By one year, that figure dropped to just 15 percent.13PubMed. Medication adherence and treatment patterns for hypogonadal patients treated with topical testosterone therapy: a retrospective medical claims analysis The reasons are varied: cost, inconvenience, messiness of application, concern about transferring the hormone to a partner or child, dissatisfaction with results, or side effects. This dropout rate is worth knowing because many of the positive outcomes described in clinical trials come from men who used the product consistently under study conditions. If you use testosterone cream erratically, you should not expect to see the same benefits in body composition, sexual function, or mood that the trials report.
Compounded Creams and What to Watch For
Many testosterone creams are compounded by specialty pharmacies rather than manufactured by large pharmaceutical companies. Compounded products are custom-mixed for the individual patient, often at a lower cost than brand-name formulations or in concentrations not commercially available. Millions of men and women in the United States use compounded bioidentical hormone products, and their use appears to be growing. However, these products have not gone through the same regulatory approval process as FDA-cleared formulations, and their safety, efficacy, and clinical utility remain formally unproven. Compounding pharmacies are not required to demonstrate batch-to-batch consistency in the same way large manufacturers are, which means the actual dose you absorb can vary. If you are using a compounded testosterone cream, periodic blood work to verify your testosterone levels is especially important, since you cannot rely on the same level of standardization that comes with a mass-produced product.