
Physician-reviewed hormone education
There is no single “best” body site for every topical hormone. The correct location depends on the exact product, concentration and formulation you were prescribed.
Medically reviewed by Dr. Timothy Mackey
Medical Director · Updated September 2026

Apply a topical hormone only to the site specified for that exact prescription. FDA-approved testosterone gels do not all use the same application sites. Testosterone gel 1% may be labeled for the shoulders/upper arms and abdomen, while many 1.62% products are limited to the shoulders and upper arms. Estradiol gel products may instead be labeled for the upper thigh. Compounded creams can have different instructions again.
That means advice such as “always use the inner thigh,” “always use the chest,” or “the scrotum absorbs best” can be wrong for a particular medication. The prescription label, pharmacy instructions and prescriber’s directions take priority.
Our testosterone gel guide covers how gels fit into TRT, while the instructions below focus on application sites.
Topical hormone products are designed and tested using specific concentrations, vehicles and application sites. Changing the location can change exposure. Even two testosterone gels with similar names may have different approved sites and different instructions about bathing, covering the area or skin-to-skin contact.
DailyMed labeling for testosterone gel 1% states that certain products are applied to clean, dry, intact skin of the upper arms/shoulders and/or abdomen, while the current 1.62% labeling restricts application to the shoulders and upper arms. The labeling specifically warns that topical testosterone products can differ in dose, strength and application instructions and should not be assumed to be interchangeable.
Some FDA-labeled 1% gels use the shoulders, upper arms and/or abdomen. They generally instruct patients not to apply the gel to the genitals, chest, armpits, knees or back.
Many current 1.62% labels specify the shoulders and upper arms only and specifically exclude the abdomen and genitals.
Some FDA-labeled estradiol gels are applied to the right or left upper thigh, alternating sides. They should not be applied to the breasts, face, irritated skin or in or around the vagina.
Read how compounded and FDA-approved testosterone products differ before comparing application instructions.
Compounded testosterone creams are different from FDA-approved commercial gels. A compounding pharmacy may prepare a cream at a concentration and in a base selected for an individual prescription. Because the product has not been evaluated through the same FDA approval process as a commercial gel, its application instructions should come directly from the prescribing clinician and dispensing pharmacy.
Some compounded testosterone creams are prescribed for non-scrotal skin, while selected formulations may be prescribed for scrotal application. Do not move a cream to the scrotum simply to try to increase absorption. Scrotal skin can produce substantially different exposure, and a formulation containing alcohol or irritating excipients may be inappropriate there. The dose may also need to be different.
If your directions are unclear, contact the prescriber or pharmacy before changing sites. NovaGenix patients can call or text 561-277-8260 with questions about their prescribed protocol.
Some prescription products use the thighs: for example, Fortesta testosterone gel 2% is labeled for the front and inner thighs. Some compounded preparations may also use this area. The thighs are not a universal site for all topical testosterone products. If a commercial testosterone gel is labeled only for the shoulders and upper arms, putting it on the inner thighs is outside the product instructions and may change drug exposure.
The same rule applies to the abdomen, chest, inner arms and other commonly discussed sites: use them only when they are appropriate for the exact medication you have been prescribed.
Not unless the specific product instructions say so. Several current testosterone gel labels explicitly state not to apply the product to the chest. This is one reason generic online lists of “best absorption sites” can be misleading.
Commercial testosterone gels generally instruct patients not to apply them to the penis or scrotum. A separately prescribed compounded cream may have different directions, but that is a formulation-specific medical decision rather than a general recommendation.
Secondary exposure is one of the most important safety issues with topical testosterone. Transfer to a partner or child can occur when treated skin contacts another person before appropriate precautions are taken.
Bathing and swimming instructions differ among products. Some testosterone gels require waiting several hours before washing the application site, while an estradiol gel may specify a different interval. Follow the instructions supplied with the exact product.
Again, formulation matters. Some products instruct patients to spread the medication over the designated area; some estradiol gels specifically state that vigorous rubbing or massaging is unnecessary. Do not assume that rubbing harder increases effectiveness. Use the technique described in the package instructions or by the dispensing pharmacy.
Trying to manipulate absorption with heat, intense rubbing, occlusive coverings or other techniques is not recommended unless specifically addressed in the medication instructions. Broken, irritated or diseased skin can also alter absorption and increase irritation. If the intended site has eczema, psoriasis, a wound, recent shaving irritation or another skin problem, ask the prescribing clinician where the medication should be placed instead.
Topical therapy avoids injections and can provide daily hormone delivery, but it also requires consistent application technique and careful attention to transfer risk. Injectable testosterone avoids skin transfer but has a different pharmacokinetic profile and administration schedule.
Neither route is automatically “better.” Treatment should be selected according to diagnosis, goals, laboratory monitoring, tolerance, cost, convenience and the patient’s ability to use the medication correctly. Read our comparison of testosterone creams versus injections and our comprehensive testosterone replacement therapy guide.
Application instructions for estradiol and other hormone products used in women are also formulation-specific. For example, certain estradiol gels are labeled for the upper thigh and instruct patients not to apply the medication to the breasts, face or vaginal area. Other estrogen products use different sites.
Women considering hormone therapy can review our women’s hormone therapy guide, estrogen therapy overview, and testosterone therapy for women.
The correct site is the one listed for your exact product. Depending on the formulation, that may include the shoulders and upper arms, and for some 1% gels the abdomen. Do not generalize instructions from one testosterone product to another.
There is no universal site. Follow the prescriber and compounding pharmacy instructions because concentration, vehicle and intended application site can differ substantially.
Do not change sites simply to increase absorption. A low or unexpected level should prompt review of dosing, adherence, timing of laboratory testing, product instructions and the treatment plan with the prescribing clinician.
It depends on the product. Commercial topical hormone products have formulation-specific washing intervals. Follow the medication guide or pharmacy instructions rather than using a single rule for all creams and gels.
Yes. Secondary exposure is a recognized risk. Handwashing, drying, covering the application site when directed and avoiding contact with treated skin are important precautions.
NovaGenix uses laboratory testing, medical history and physician evaluation to determine whether topical or injectable hormone therapy is appropriate. Learn more about Dr. Timothy Mackey and NovaGenix Health & Wellness.
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This article is educational and is not individualized medical advice. Always follow the directions for the exact medication and formulation dispensed to you.
Speak with NovaGenix about physician-led evaluation, testing, and treatment options in Jupiter, Florida.
Medical disclaimer: This article is for general educational purposes only and is not medical advice, a diagnosis, or a treatment recommendation. Reading it does not create a physician-patient relationship. Always consult a qualified healthcare professional about your individual circumstances, and never delay seeking care because of something you read here. If you are experiencing a medical emergency, call 911. Read our full Medical Disclaimer.


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609 N Hepburn avenue suite 106. Jupiter, Florida 33458
561-277-8260
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