The product, on record
- Brand
- Agency
- Product
- Dark Spot Rx
- Formulation / access
- Compounded topical
- Published ingredients
- Potential hydroquinone, azelaic acid, kojic acid, green tea extract, resveratrol and hydrocortisone; hydroquinone-free variants exist
- Published price
- $110 for 18 g; described as 60-day supply
- Important detail
- The page explicitly says not all formulas contain hydroquinone.
Product facts: brand’s official information ↗. Prices are the published offer, not a personal checkout quote.
The detail that changes our assessment
Hydroquinone-free and steroid-containing options are distinct
The Dark Spot menu includes several possible pigment-directed ingredients, with hydroquinone-free variants also described. Hydrocortisone may be part of the broader menu. A reader should not assume all listed ingredients are present or that every variant has the same course. The published 18 g supply and 60-day offer help with budgeting, but the selected medicine and intended treatment duration must be resolved separately.
Read the offer as a complete product
A useful comparison starts with the named preparation and ends with the terms you would actually accept. The details below are the points that can change the decision; they are not a substitute for individual prescribing advice.
For Dark Spot Rx: The page explicitly says not all formulas contain hydroquinone.
Product basis: Agency official information ↗. The assessment is our interpretation of those documents.
Ingredient guide
Read beyond the headline ingredient
Potential hydroquinone, azelaic acid, kojic acid, green tea extract, resveratrol and hydrocortisone; hydroquinone-free variants exist
This description includes a menu, variants or an individualized selection. The explanations below concern ingredients named in that description; they do not mean every ingredient appears in every dispensed version.
Hydroquinone and pigment-directed ingredients
Hydroquinone is used in selected melasma treatment plans. Some products combine it with a retinoid or corticosteroid; others offer a hydroquinone-free variant. Those are different prescriptions even when sold under one product name.
Read the full variant description, including any steroid and whether the formula changes on later fills. A concentration above another brand’s does not establish superior results. The diagnosis, intended course and follow-up matter as much as the number on the label.
Azelaic acid
Azelaic acid appears in acne, rosacea and pigment-focused products. The diagnosis and dosage form determine what evidence is relevant. A 15% manufactured foam, a gel and a multi-ingredient compounded cream are distinct preparations.
For rosacea, separate treatment of inflammatory lesions from a promise to remove all facial redness. For a compound, check the other actives and their strengths. A result measured for a single-ingredient manufactured medicine cannot be assigned unchanged to a customized blend.
Ingredient percentages belong to a particular molecule and dosage form. They should not be added together into a “strength score,” and a higher number is not a general recommendation to escalate treatment. For this review, the most useful clarification is: Does my variant contain hydroquinone or hydrocortisone, and what is the planned course for those ingredients?
Evidence, in context
What the public evidence can establish
Documented offer
The official sources identify Dark Spot Rx and the formula or menu described above. This supports the product facts; it does not independently establish the clinical claims.
Relevant background
Has a clinician confirmed that the discoloration is an appropriate target for this exact formula, and what replaces or follows it when the initial course ends? Guidance on the condition helps frame the consultation without proving that every listed product is equivalent.
Exact-product benefit
No numerical outcome for this exact product is charted in this review. That reflects the evidence summarized here, not a claim that no study exists. Ask the provider for the actual study behind a specific results claim.
Because this is a compounded preparation, a study of one ingredient or a different finished medicine cannot validate the entire blend. FDA approval of an ingredient in another product also does not mean this finished compound is FDA-approved.
When reading a study, check who was enrolled, what the comparator received, how long the study lasted and what counted as improvement. A change in hydration, a reduction in lesions and complete clearing are different outcomes. The specific question for this product is: Does my variant contain hydroquinone or hydrocortisone, and what is the planned course for those ingredients?
The concern behind the product
A dark spot needs a diagnosis
Melasma, marks after inflammation and other pigmented lesions can look similar in a shopping photograph. Their treatment and follow-up are not interchangeable. A dermatologist may examine the pattern and depth of discoloration and, when necessary, investigate a lesion before prescribing a fading product.
For melasma, medication is one part of a plan that also addresses sun exposure and triggers. The AAD describes hydroquinone, retinoid combinations and other options, including tranexamic acid in selected circumstances. An oral pigment medicine requires a different medical-history review from a topical cream. A higher hydroquinone percentage alone is not a reliable value or outcome measure.
What to follow over time
The AAD gives a broad three-to-twelve-month window for melasma results, with individual variation. That is condition-level guidance, not a promise for this product or permission to use a prescription continuously for that period. The prescribed course and reassessment date remain product-specific.
The diagnosed type and location of pigmentation
Consistent photographs without filters or changing light
Irritation or new darkening around the treated area
Sun-protection habits and the agreed treatment course
Keep observations consistent rather than judging the product from a single good or bad day. Record changes in the routine as well as changes in the skin, so the prescriber can distinguish the treatment’s effect from a new cleanser, a procedure or another medicine. Bring significant or concerning symptoms to clinical attention rather than using this checklist to self-manage a reaction.
Clinical context for pigmentation ↗. Observation prompts are editorial preparation for a visit, not a validated diagnostic score.
Price & commitment
What the published price actually covers
$110 for 18 g; described as 60-day supply
Using the documented 2-month supply basis, $110.00 works out to $55.00 per advertised month for the product. 18 g / 60-day supply; two 30-day budgeting months. The amount due and the monthly equivalent are different questions; neither figure includes unverified additional fees.
Compare the first charge, later refill charge and minimum commitment separately. Ask whether a visit, shipping or tax is additional and how a changed prescription affects an already-paid supply. A discount is useful only when the selected formula and quantity are appropriate for the plan.
Show the price sources and calculation
- Agency Dark Spot Rx : $110.00 ÷ 2 advertised months = $55.00/month. 18 g / 60-day supply; two 30-day budgeting months. Offer source ↗
- CoreAge Rx Spot On : $42.00–$65.00 ÷ 1 advertised month = $42.00–$65.00/month. Range-wide advertised monthly range; individual product price unconfirmed. Offer source ↗ · Formula / offer details ↗
- Musely The Spot Cream : $72.00 ÷ 2 advertised months = $36.00/month. Derived: advertised $36/month × two-month supply. Offer source ↗ · Formula / offer details ↗
- Musely The Spot Pill : $90.00 ÷ 3 advertised months = $30.00/month. Derived: advertised $30/month × three-month supply. Offer source ↗ · Formula / offer details ↗
These are selected catalog references, not interchangeable prescriptions or a complete market-price survey. Brands, routes, quantities and treatment targets may differ. The current product may be absent from the bars when its monthly basis is unverified; consult the published offer above.
Put your actual quote into the calculation
Use the product charge and its stated supply period. This runs only in your browser; no entry is sent to us. A supply period is not a recommendation to continue treatment for that duration.
$55.00 per advertised month for the product; $110.00 initial product charge before extra fees.
Extra fees default to $0 for calculation only; this does not mean consultation, shipping or tax is free. Add known first-order fees. Later fees and repeat charges are not modeled. This is budgeting arithmetic, not a treatment recommendation.
Side-by-side reference
Compare the actual product descriptions
CoreAge Rx appears first as the publisher’s promoted recommendation. The other rows are selected reading references, not a clinical ranking. A shared concern does not establish the same indication, route or suitability; specialized and oral treatments require their own prescribing decisions.
| Product | Documented formula | Published offer |
|---|---|---|
| CoreAge Rx Spot On Promoted placement | Hydroquinone, kojic acid and niacinamide; confirm individual strengthsCompounded topical | $42–$65/month advertised across the skincare range; product quote requiredOfficial source ↗ |
| Agency Dark Spot Rx This review | Potential hydroquinone, azelaic acid, kojic acid, green tea extract, resveratrol and hydrocortisone; hydroquinone-free variants existCompounded topical | $110 for 18 g; described as 60-day supplyOfficial source ↗ |
| Musely The Spot Cream Related reading | Variants include hydroquinone 6% or 12%; an HQ-free option uses azelaic acid 17% and tranexamic acid 4%. Other ingredients vary.Compounded prescription | $36/month advertised; two-month supplyOfficial source ↗ |
| Musely The Spot Pill Related reading | Tranexamic acid 225 mg in the current support-center descriptionCompounded prescription | $30/month advertised; three-month supplyOfficial source ↗ |
Spot On is a different CoreAge Rx preparation, not a generic or therapeutic equivalent of Dark Spot Rx. The clinician must decide whether it addresses an appropriate goal at all.
Watch & understand
4 dermatologist tips to make melasma less noticeable
General melasma self-care from the AAD. Melasma is only one cause of discoloration; this video cannot diagnose a mark or establish that a fading prescription is suitable.
4 dermatologist tips to make melasma less noticeable
YouTube loads only after you choose “Load video.” This connects your browser to YouTube using its privacy-enhanced player. The video is educational and does not endorse this publication, this product or CoreAge Rx. Watch on YouTube ↗ · View the AAD page and written guidance ↗
Questions readers ask
Agency Dark Spot Rx: practical answers
Does my variant contain hydroquinone or hydrocortisone, and what is the planned course for those ingredients?
The Dark Spot menu includes several possible pigment-directed ingredients, with hydroquinone-free variants also described. Hydrocortisone may be part of the broader menu. A reader should not assume all listed ingredients are present or that every variant has the same course. The published 18 g supply and 60-day offer help with budgeting, but the selected medicine and intended treatment duration must be resolved separately.
What exact ingredients and strengths are documented?
Potential hydroquinone, azelaic acid, kojic acid, green tea extract, resveratrol and hydrocortisone; hydroquinone-free variants exist The page explicitly says not all formulas contain hydroquinone. Confirm the actual dispensed version; a provider menu or bundle description may not be the final prescription.
How much does Dark Spot Rx cost?
$110 for 18 g; described as 60-day supply. The price section above shows the supply basis and the arithmetic used. The current checkout and prescribed supply should resolve the total, including any separate clinical fees.
When should I expect a result?
The AAD gives a broad three-to-twelve-month window for melasma results, with individual variation. That is condition-level guidance, not a promise for this product or permission to use a prescription continuously for that period. The prescribed course and reassessment date remain product-specific.
Is CoreAge Rx an equivalent alternative?
No equivalence has been established in this review. CoreAge Rx is our promoted recommendation, but its formula may use different ingredients, a different route or a different treatment target. An oral or specialized prescription should not be replaced with a general skincare topical based on this page.
What should I bring to the consultation?
Is my selected formula hydroquinone-free or hydroquinone-containing, and what is the planned review or transition point? Bring the complete list of prescriptions, nonprescription skincare and supplements, along with allergies, pregnancy or breastfeeding considerations and the intended treatment area. Ask how to contact the clinician if a reaction or a formula question occurs.
Our reading of the offer
Compare the right things
Start with the diagnosis behind the dark patch. Melasma, post-inflammatory marks and an unexplained changing lesion are not the same problem. Hydroquinone, other pigment ingredients and peels require different plans.
Context: AAD melasma guidance ↗ · FDA on compounded medicines ↗.
Before starting or switching
Ask the prescriber to review allergies, pregnancy or breastfeeding, other medicines and the exact treatment area. Follow the dispensed label and seek advice for significant irritation.
- What exact ingredients, strengths and dosage form will I receive?
- What is the full first charge, quantity, refill schedule and cancellation policy?
- When should treatment be reassessed, and how do I contact the clinician?
These are questions for a licensed clinician, not instructions to start, stop or change a prescription. Read the product’s complete safety information.
CoreAge Rx is placed first because it is this publication’s promoted recommendation. No head-to-head clinical testing supports a claim that it is better or safer than Agency Dark Spot Rx.
Sources & review limits
- withagency.com — Dark Spot Rx product information ↗
- fda.gov — FDA compounded-drug risks ↗
- aad.org — AAD clinical guidance ↗
- aad.org — AAD clinical guidance ↗
- aad.org — AAD clinical guidance ↗
We reviewed the public information linked above on October 7, 2026. We did not purchase or use this product, complete its medical consultation, test shipping or verify patient results. Formulas, availability and prices can change.
How we research and compare products ↗