Topical dutasteride spray guide
For prescribed dutasteride-only and dutasteride–minoxidil compounded sprays, with careful dose and contact precautions.
How to use
- 01
Step 1
Use the pharmacy-labelled dose
The catalogue includes 0.05% dutasteride spray with or without 5% minoxidil. Use only the prescribed pumps and frequency; compounded sprays can differ in pump volume and must not be substituted measure for measure.
- 02
Step 2
Apply to scalp and let it dry
Apply to a dry, intact scalp, wash hands, and prevent transfer until fully dry. Do not use more after a missed application or combine with oral dutasteride unless specifically prescribed.
Dose schedule
- 01
Step 1
Daily as labelled
Keep a simple record of the number of pumps and whether the formula contains minoxidil. This prevents accidental duplicate treatment.
- 02
Step 2
Review after several months
Assess scalp tolerance, systemic symptoms, adherence, and standardised photographs. Continue only while the prescriber considers the compounded off-label treatment suitable.
Side effects
Scalp effects
Redness, dryness, itching, flaking, or burning can occur. A minoxidil-containing formula may also cause early shedding or unwanted hair after transfer.
Whole-body effects
Dutasteride can cause sexual, breast, fertility, or mood effects; minoxidil can cause dizziness, palpitations, or swelling. Topical use reduces but does not remove these possibilities.
04 · When to contact your doctor
Contact your doctor if
- Chest pain, fainting, breathing difficulty, facial swelling, or a widespread rash
- A breast lump, severe mood change, persistent sexual symptoms, palpitations, or ankle swelling
- Wet product contacts a pregnant person, someone who could become pregnant, a child, or a pet
Storage
Keep in the original pharmacy-labelled bottle, tightly closed, upright, and away from heat or flame. Follow the pharmacy's storage and use-by instructions exactly.
What to expect
Hair treatment is gradual. Early shedding can occur, and photographs taken in the same light are more useful than day-to-day checking. The doctor normally reviews tolerance and progress after several months; continue only while the balance of benefit and risk remains appropriate.