Topical Dutasteride for Hair Loss
HAIR LOSS TREATMENT
A potent approach to reducing DHT activity at the hair follicle. Topical dutasteride is a scalp-applied formulation designed to reduce the activity of dihydrotestosterone (DHT), one of the key hormones involved in androgenetic alopecia (pattern hair loss).
From /100ml
£65
Apply 1ml once daily, 100ml bottle lasts approximately 3 months at this rate.
From /100ml
£65
Formulated without propylene glycol. see why
What is Dutasteride?
Dutasteride is a medication that inhibits the enzyme 5-alpha-reductase, which is responsible for converting testosterone into dihydrotestosterone (DHT).
Unlike finasteride, which primarily inhibits type II 5-alpha-reductase, dutasteride inhibits both type I and type II 5-alpha-reductase — resulting in a greater reduction in DHT production. Because DHT plays an important role in androgenetic alopecia, reducing DHT activity may help slow follicle miniaturisation in genetically susceptible individuals.
DHT can contribute to progressive miniaturisation of susceptible hair follicles, leading to shorter growth cycles, finer hairs, and gradual reduction in hair density. Our topical dutasteride formulations are considered following a clinical assessment, allowing treatment options to be tailored according to individual circumstances, goals, and preferences.
THE SCIENCE
How does Dutasteride work?
Topical dutasteride is applied directly to areas of the scalp affected by hair loss. The aim is to:
Reduce DHT activity around the hair follicle
Target the scalp area affected by hair loss
Limit exposure compared with oral administration
Although topical application aims to focus treatment on the scalp, some absorption into the bloodstream may occur.
MAKING THE RIGHT CHOICE
Topical dutasteride vs oral dutasteride
Topical Dutasteride
Topical dutasteride aims to provide a more scalp-focused approach.
More targeted delivery
The medication is applied directly to the scalp where treatment is required.
Lower systemic exposure
Topical delivery may reduce overall exposure compared with oral treatment, although absorption depends on formulation, concentration, application area, and frequency.
High potency
Because dutasteride inhibits both type I and type II 5-alpha-reductase, it has the potential to provide strong DHT reduction at the follicle level.
Flexible formulation options
Topical formulations can be adjusted depending on clinical considerations, including concentration, vehicle, and patient preference.
Oral Dutasteride
Oral dutasteride is a highly potent DHT-lowering medication.
Benefits
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Strong inhibition of both type I and type II 5-alpha-reductase
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Greater reduction in DHT compared with finasteride
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Evidence suggests effectiveness in androgenetic alopecia
Considerations
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Produces substantial systemic DHT suppression
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Long half-life means effects can persist for an extended period after stopping
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Not suitable for everyone
CHOOSING BETWEEN OPTIONS
Topical dutasteride vs topical finasteride
Both are DHT-targeting treatments applied directly to the scalp, but they differ in potency and how established the evidence base is. The most appropriate option depends on individual circumstances rather than potency alone.
Topical Dutasteride
Inhibits both type I and type II 5-alpha-reductase
Mechanism
DHT reduction
Generally greater, due to dual-enzyme inhibition
0.25%, adjustable following assessment
Common strength
Evidence base
Smaller evidence base for topical use specifically, compared with finasteride
May suit
Individuals with a previous inadequate response to finasteride, or where a more intensive approach is being considered
Topical Finasteride
Mechanism
Primarily inhibits type II 5-alpha-reductase
Effective, though generally less than dutasteride
DHT reduction
0.025%–0.2%, adjustable following assessment
Common strength
Evidence base
More established treatment history overall
May suit
Individuals starting DHT-targeting treatment for the first time, or preferring a more established option
TAILORED TO YOU
What strength is used?
Topical finasteride is not a one-size-fits-all treatment. A range of concentrations may be considered depending on your individual circumstances.
0.02%
Dutasteride
Following assessment, formulations may be adjusted depending on
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Severity of hair loss
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Previous treatment response
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Treatment goals
0.05%
Dutasteride
0.1%
Dutasteride
Potential adjustments may include
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Dutasteride concentration
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Application volume
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Frequency of application
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Combination with other appropriate ingredients
0.25%
Dutasteride
Potential side effects and considerations
Topical vs oral risk: Topical application means lower systemic absorption than oral dutasteride, so these effects are generally less likely — but not eliminated, so still worth discussing before starting.
Common (affects approximately 1 in 10 people)
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Scalp irritation, dryness, or itching at the application site
Uncommon (affects approximately 1 in 100 people)
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Reduced libido
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Mild mood changes
Rare (affects approximately 1 in 1,000 people)
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Erectile dysfunction
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Decreased ejaculate volume
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Breast tenderness or swelling (gynaecomastia)
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Testicular discomfort
Very rare (affects approximately 1 in 10,000 people)
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Persistent sexual side effects continuing after stopping treatment
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Significant mood disorder, including reports of suicidal thoughts
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Changes to semen parameters affecting fertility
Dutasteride has a considerably longer half-life than finasteride, so if side effects do occur, they may take longer to resolve after stopping treatment
How long does it take to work?
Hair growth is a slow process. Most hair-loss treatments require consistent use over several months before meaningful changes can be assessed. Some people notice reduced shedding before visible improvements in density.
Treatment response varies between individuals depending on:
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Age
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Extent of miniaturisation
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Duration of hair loss
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Genetics
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Treatment adherence
Not suitable for women who are pregnant, breastfeeding, or of childbearing potential. May be considered for postmenopausal women following clinical consultation.
Frequently Asked Questions
Is topical dutasteride stronger than topical finasteride?
Dutasteride is a more potent inhibitor because it blocks both type I and type II 5-alpha-reductase. However, the most appropriate treatment depends on individual circumstances rather than potency alone.
Is topical dutasteride safer than oral dutasteride?
Topical administration may reduce systemic exposure, but it does not eliminate absorption. The potential benefits and risks should be assessed individually.
Can topical dutasteride be combined with other treatments?
Combination approaches may be considered depending on the individual's hair-loss pattern, scalp health, and treatment goals.
Do I need to use topical Dutasteride forever?
Dutasteride needs to be used consistently to maintain its benefits. If treatment is stopped, any hair maintained or gained from treatment may gradually be lost over the following months.
IMPORTANT INFORMATION
This is an unlicensed medicine, prepared specifically for you following clinical assessment. It does not hold a UK marketing authorisation in this strength or formulation. Unlicensed medicines are used when no licensed product meets your individual clinical needs, in line with MHRA guidance on the supply of unlicensed medicines and GPhC standards for pharmacist prescribing
Is topical Dutasteride suitable for you?
The first step is a clinical hair-loss assessment. Provide details about your hair loss, medical history, and scalp photographs so your case can be reviewed and an appropriate treatment approach considered.
Prescription treatment is not guaranteed and will only be supplied where clinically appropriate.