Already using a topical gel and tired of the daily routine around it? Considering a switch to a metered spray?
Gels made hormone therapy needle-free. A metered spray goes further — a measured dose on a small area, dry in minutes, with no hand-spreading.
Spray vs. gels: what are the differences?
Testosterone Spray Rx
RxTopical gel
Delivery
Testosterone Spray RxMetered transdermal spray to a small area of skin, powered by Hypospray®.
Topical gelGel spread by hand across the upper arms and shoulders.[1]
Dose measurement
Testosterone Spray RxThe same metered actuation every time.
Topical gelPump actuations or single-dose packets, 40.5 mg to start, adjustable between 20.25 mg and 81 mg.[1]
Application area
Testosterone Spray RxA small, targeted patch of skin.
Topical gelThe label limits the area to what a short-sleeve t-shirt covers, and rules out the abdomen, genitals, chest, underarms and knees.[1]
Dry time and residue
Testosterone Spray RxDries in minutes.
Topical gelLonger dry-down; hands washed with soap and water immediately after every dose.[1]
Secondary exposure
Testosterone Spray RxTransfer precautions apply, as they do for any topical testosterone.
Topical gelAndroGel carries an FDA boxed warning for secondary exposure; virilization has been reported in children after skin contact with a treated adult.[3][4]
How much is absorbed
Testosterone Spray RxPlatform pharmacokinetics are published in the peer-reviewed literature.[P]
Topical gelRoughly 9–14% of the testosterone applied in a 1% gel is bioavailable.[2]
Staying on therapy
Testosterone Spray RxDose adjustments and follow-up labs are included in the membership.
Topical gelIn 15,435 men, 34.7% remained on topical therapy at six months and 15.4% at twelve.[5]
Topical gelBilled in pieces: visits, labs, and pharmacy costs by plan.
Product details are taken from FDA labelling; application area, dry time, and contact precautions vary by product. Transfer precautions apply to topical testosterone as a class, including a spray. Keen Testosterone Spray Rx is a compounded medication prepared by a US 503A compounding pharmacy; compounded medications are not FDA-approved. AndroGel is FDA-approved. Not medical advice — a licensed clinician determines whether a spray protocol is right for you.
About Testosterone Spray Rx
Testosterone Spray Rx therapies deliver compounded hormone medication through the skin using Hypospray®, a licensed topical transdermal technology. Each actuation is a metered dose, applied to a small area of clean, dry skin.
A membership covers the full loop: lab panels, licensed clinician consultations in the app, compounded medication shipped to your door, and dose adjustments made from your results.
The men’s bottle holds 14 mL and delivers 0.20 mL per spray — a 35-day supply. Your prescriber sets the per-spray strength. Pharmacokinetics for the transdermal spray platform have been published in the peer-reviewed literature.[P]
About topical gels
Topical gels were the first widely used needle-free route — a measured volume spread by hand across shoulders, upper arms, or abdomen each day.
They removed the needle but added a routine: broad application area, dry-down time, hand-washing, and contact precautions until the area is covered or washed.
AndroGel 1.62% starts at 40.5 mg once daily in the morning, applied to the upper arms and shoulders only — the label rules out the abdomen, genitals, chest, underarms and knees, and limits the area to what a short-sleeve t-shirt covers.[1] Of the testosterone applied in a 1% gel, roughly 9–14% is bioavailable.[2] Real-world persistence is low: in 15,435 men followed for a year, 34.7% were still on therapy at six months and 15.4% at twelve.[5]
See why a metered dose beats a hand-spread layer
One flat membership covers labs, clinicians, and medication — no per-item billing.
Gels were the first needle-free option, and they still work for many patients. These are the three reasons people most often want something else.
ONE
A measured dose, not a smear
Every actuation delivers the same metered dose. Nothing depends on how evenly you spread it or how much stays on your hands.
TWO
A small area, not a t-shirt
AndroGel’s label limits application to the upper arms and shoulders, over an area the size of a short-sleeve t-shirt.[1] A metered spray treats a targeted patch of skin.
THREE
Fewer people give up on it
Adherence to topical testosterone in routine care is low — 15.4% of men were still on therapy at twelve months in one 15,435-patient analysis.[5] A membership that includes the labs and the follow-ups is built around that problem.
Keen membership
Ready for a measured dose instead of a smear?
or $199/mo when you pay $599 up front for three months. No insurance needed.
Transfer precautions still apply, as they do for any topical testosterone
Labs, clinician access, and medication in one membership
14 mL bottle, 0.20 mL per spray — a 35-day supply, with per-spray strength set by your prescriber
Established needle-free route
Widely available in multiple strengths
Familiar to clinicians and pharmacies
Requires broad application, dry time, and contact precautions
Applied to the upper arms and shoulders only, over an area the label limits to what a short-sleeve t-shirt covers[1]
What each one includes
One published membership price on our side. On the other, a bill assembled from parts.
Keen membership
$229/mo
or $199/mo when you pay $599 up front for three months. No insurance needed.
Included, no separate bill
Initial and follow-up lab panels
Licensed clinician consultations in the app
Compounded medication, shipped to your door
Dose adjustments from your lab results
Ongoing support, whenever you need it
Typical gel protocol
Varies
Billed separately
Office visits and follow-upsper visit
Lab panelsper draw
Gel medication and pharmacy feesper refill
Product lost to hands and clothingper dose
Contact-precaution routinedaily
Travel and waiting-room timeper cycle
Care and support
With Keen
Licensed clinicians answer in the app — no phone tree, no separate visit fee. Lab panels, protocol changes, and refills all run through the same thread.
Topical gel
Support depends on the provider and the plan — office visits, pharmacy calls, and lab coordination are usually handled separately from each other.
Frequently asked questions
Is the spray inhaled or nasal?
No. Hypospray® is a topical transdermal technology — the spray is applied to your skin and absorbed through it. Nothing is inhaled.
Does a spray remove the transfer risk?
No, and any page telling you otherwise is overstating it. Washing your hands, letting the application dry before skin-to-skin contact, and keeping the site covered are requirements of topical testosterone as a class. Tell your prescriber who else lives in your home — young children, or a partner who is pregnant or may become pregnant, are relevant clinical information.[3][4]
Why does the application area matter?
AndroGel’s label restricts application to the upper arms and shoulders and limits the area to what a short-sleeve t-shirt covers.[1] A metered spray places a measured dose on a smaller, targeted area.
Are gels a worse choice?
No. Gels are an established, widely available, FDA-approved route, and the Endocrine Society guideline sets no ranking between formulations.[7] This page is about what changes in your routine and your bill if you switch.
What does membership cost?
$229/mo, or $199/mo when you pay $599 up front for three months. No insurance needed. Labs, clinician visits, and medication are included.
Spray or gel: which is right for you?
Neither route is right for everyone. A licensed clinician decides based on your labs, your history, and how you want to live with your protocol.
Consider the spray if
You want a measured dose every time
You would rather treat a small area than a broad spread
You would rather not spread gel by hand
You want one predictable membership price
A gel may still suit you if
Your current gel protocol is working well
You want an FDA-approved product — AndroGel is approved; a compounded spray is not
Your clinician recommends staying on it
The Endocrine Society guideline sets no ranking between formulations — choice rests on preference, pharmacokinetics, burden, and cost[7]
or $199/mo when you pay $599 up front for three months. No insurance needed.
Hypospray® is a registered trademark. Keen Meds Inc. utilizes the Hypospray® topical transdermal delivery platform under license.
Keen Testosterone Spray Rx is a compounded medication prepared by a US 503A compounding pharmacy; compounded medications are not FDA-approved. Products named on this page are FDA-approved and their details are taken from their FDA labelling. This is a comparison of how each medication is administered — not a claim of clinical superiority, equivalence, or comparative effectiveness. Not medical advice; a licensed clinician determines what is appropriate for you.
Swerdloff RS, Wang C, Cunningham G, et al. Long-term pharmacokinetics of transdermal testosterone gel in hypogonadal men. J Clin Endocrinol Metab. 2000;85(12):4500–4510. PMID 11134099PMID 11134099
de Ronde W. Hyperandrogenism after transfer of topical testosterone gel: case report and review of published and unpublished studies. Hum Reprod. 2009;24(2):425–428. PMID 18948313PMID 18948313
Azova S, Wolfsdorf J. Precocious sexual development in a male toddler caused by unrecognized transdermal exposure to testosterone. J Pediatr Endocrinol Metab. 2021;34(5):675–678. PMID 33660485PMID 33660485
Schoenfeld MJ, Shortridge E, Cui Z, Muram D. Medication adherence and treatment patterns for hypogonadal patients treated with topical testosterone therapy: a retrospective medical claims analysis. J Sex Med. 2013;10(5):1401–1409. PMID 23464534PMID 23464534
Marbury T, Hamill E, Bachand R, et al. Evaluation of the pharmacokinetic profiles of the new testosterone topical gel formulation, Testim, compared to AndroGel. Biopharm Drug Dispos. 2003;24(3):115–120. PMID 12673669PMID 12673669
Bhasin S, Brito JP, Cunningham GR, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103(5):1715–1744. PMID 29562364PMID 29562364
[P] Chik Z, Johnston A, Tucker AT, Chew SL, Michaels L, Alam CAS. Pharmacokinetics of a new testosterone transdermal delivery system, TDS®-testosterone, in healthy males. Br J Clin Pharmacol. 2006;61(3):275–279. doi:10.1111/j.1365-2125.2005.02542.x PMID 16487220PMID 16487220doi:10.1111/j.1365-2125.2005.02542.x
