Hair Loss Medications Singapore · Oral & Topical Therapy · Nutritional Support · Exosomes · Dr Sin Yong

Anti-Hair-Loss Medications Singapore

Medically reviewed by Dr Sin Yong · Last reviewed 20 October 2026 · 13 min read · Doctor-performed, never delegated · Jump to questions

Dr Sin Yong · MBBS (NUS) · MRCS (Edin) · MSc Aesthetic Medicine with Distinction (Queen Mary, London) · MSc Practical Dermatology (Cardiff) · Global Key Opinion Leader

Evidence-based medical treatment is the cornerstone of any effective hair loss protocol. Dr Sin Yong prescribes and oversees a structured stepwise medication protocol — oral and topical therapy alongside nutritional supplementation, exosome topicals and blood test monitoring.

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7-Step

Structured Protocol

Prescription

Oral + Topical Therapy

Nutritional

Nourkin TricoVerde

Monitoring

Blood Test Oversight

The Philosophy

Topical finasteride is a prescription medicine applied to the scalp for androgenetic hair loss. Like the tablet, it blocks the enzyme that converts testosterone into DHT, but it is designed to act mainly where applied, with lower systemic exposure. Some is still absorbed, so in Singapore it is prescribed after a doctor's assessment and side-effect discussion.

Key takeaways

Anti-hair-loss medication is prescription treatment for androgenetic alopecia, started after a doctor's assessment and side-effect discussion.
Oral and topical DHT-pathway therapy act on the hormonal driver; a topical vasodilator acts through the follicle's blood supply.
Not all thinning is androgenetic, so the scalp and baseline blood tests are checked first.
The seven-step protocol is personalised, and not every patient needs every step.
Drug names are given for education; finasteride is not for women who are or may become pregnant.

On this page

Medical Foundation First
Seven Steps, Evidence-Based
The 7-Step Anti-Hair-Loss Medication Protocol
Step 7 — Blood Test Monitoring
Topical finasteride in Singapore: who prescribes it and what is discussed
Who it suits, who should wait, who is referred on
What happens, step by step
Risks, side effects and when to call
Aftercare
Before you book
What determines the fee
Myths we hear in clinic
Frequently asked questions
Frequently Asked Questions — Anti-Hair-Loss Medications
Anti-Hair-Loss Medication Consultation — Dr Sin Yong

In brief

Hair loss medication is the foundation of most pattern hair loss plans. Oral or topical medicines slow the hormonal miniaturisation of follicles, minoxidil supports growth, and supplements and blood test monitoring sit alongside. Dr Sin Yong prescribes and oversees them in a stepwise protocol after the cause is diagnosed, and reviews side effects as treatment continues.

Medical Foundation First

No laser treatment, exosome application or supplement can compensate for uncontrolled DHT-driven follicle miniaturisation. The medical foundation — addressing the hormonal driver of hair loss with prescription medications — must be established first. Energy treatments and growth factor therapies then build on this foundation to maximise regrowth potential.

The Protocol

A man running his fingers through his hair at the hairline in front of a mirror — Assessment comes before any device or injectable is chosen.

Seven Steps, Evidence-Based

Dr Sin Yong's anti-hair-loss medication protocol is structured as a seven-step programme. Steps are introduced progressively based on diagnosis, response and tolerance. Not every patient requires all seven steps — the protocol is personalised at consultation.

Key facts

Condition: Androgenetic alopecia (AGA) — pattern hair loss in men and women
Underlying mechanism: Dihydrotestosterone (DHT) binds androgen receptors in susceptible follicles, shortening the anagen phase and causing progressive follicular miniaturisation
FDA-approved routes: Two: a topical vasodilator and an oral DHT-pathway therapy
Topical route: A vasodilator, originally developed for an unrelated use. Improves follicular blood perfusion; the hair-growth effect was an incidental discovery
Oral route: Blocks conversion of testosterone to DHT, addressing the driver rather than the symptom
Where therapy alone is not the whole plan, Regenera Activa acts through a third route. Alternative oral route: Inhibits DHT conversion via a broader enzyme pathway. Used in some countries for AGA but not FDA-approved for that indication
Assessment: Oral therapy requires medical assessment, with side-effect profiles discussed before any course begins

How medication fits a woman’s plan is set out on female hair loss treatment Singapore.

A non-drug option used alongside these medicines is H2LT, Dr Sin Yong's low-level laser protocol.

The 7-Step Anti-Hair-Loss Medication Protocol

Step 1 — Oral Therapy

Blocks the DHT pathway at the follicle. A well-studied medical treatment for androgenetic alopecia. Prescribed in appropriate candidates after discussion of benefits and risks.

Step 2 — Topical Therapy

A vasodilator that prolongs the anagen (growth) phase of the hair cycle. Available as solution or foam. Effective independently of DHT and can be used in both men and women.

Step 3 — Topical DHT-Pathway Therapy

For patients who wish to reduce systemic exposure, this route delivers active therapy to the scalp with lower systemic absorption than the oral form.

Step 4 — Hormonal Therapy (Selected Cases)

Anti-androgen approach used in selected female patients with androgenetic alopecia or hormonal hair loss where conventional treatments are insufficient.

Step 5 — Nourkin (TricoVerde)

A clinically formulated nutritional supplement containing saw palmetto, biotin, zinc, and key micronutrients shown to support hair follicle health. Used alongside medical treatment for nutritional support.

Step 6 — Derive Serum (Exosome Topical)

An exosome-based scalp topical containing growth factors and signalling molecules. Applied daily to maintain growth factor delivery to follicles between clinic sessions.

What does each class of hair loss medication do, and what is monitored?

This table groups anti-hair-loss medications by class rather than by product, sets out what each does and names what is checked while it is used. Monitoring is part of the prescription, which is why these medicines are prescribed and reviewed by a doctor rather than bought from a listing.

Drug class	What it does	What is monitored	Not for
Oral DHT-pathway therapy (5-alpha reductase inhibitor)	Lowers the DHT that drives follicle miniaturisation	Sexual side effects and mood at each review; liver function on blood tests; awareness that PSA readings fall	Women who are or may become pregnant
Topical DHT-pathway therapy	Acts on the same enzyme at the scalp with lower systemic exposure	Scalp irritation, plus the same systemic checks as the tablet; absorption is lower, not zero	Pregnancy, including handling the product
Topical vasodilator (minoxidil solution or foam)	Prolongs the growth phase and enlarges miniaturised follicles where applied	Scalp irritation, early shedding and unwanted facial hair where it runs	Anyone expecting it to block DHT or to hold its effect once stopped
Oral vasodilator (off-label oral minoxidil)	Acts on the same hair-cycle mechanism through the bloodstream	Blood pressure, heart rate, fluid retention and body hair growth; cardiac history taken first	People with heart or blood pressure conditions that have not been reviewed
Anti-androgen hormonal therapy (selected women)	Reduces androgen effect at the follicle where pattern loss has a hormonal driver	Blood pressure and electrolytes where the agent requires it; menstrual changes; contraception	Men; pregnancy; women whose cause has not been worked up with blood tests
Nutritional support	Supplies micronutrients that support the follicle; corrects a deficiency found on screening	Ferritin, iron, zinc and thyroid on baseline and follow-up bloods	Use as a substitute for treating the androgen driver

Topical finasteride in Singapore: who prescribes it and what is discussed

In Singapore, topical finasteride is obtained on a doctor's prescription after assessment, not bought as a cosmetic scalp product. It is the topical DHT-pathway therapy in step 3 of the protocol above, named here for education only.

Assessment comes first because not all thinning is androgenetic. The scalp is examined, and causes such as telogen effluvium, thyroid disease or low iron are considered, which is where the baseline blood tests come in. Finasteride is not for women who are or may become pregnant, and they should avoid handling it.

Side effects are discussed before starting. Scalp irritation can occur where it is applied. Because some of the medicine is absorbed, the effects discussed for the tablet still apply: changes in libido, erection or ejaculation in a minority of men, reported mood changes, and lower PSA readings, which matters for prostate screening. Anyone who notices low mood should stop and seek medical advice.

Controlled trials have compared topical finasteride with placebo and reported smaller falls in blood DHT than with tablets, but lower exposure is not zero. In 2025 the US FDA also alerted the public to side effects reported with compounded topical finasteride products sold online, which is one reason it is prescribed and followed up by a doctor rather than self-sourced.

Minoxidil vs finasteride vs low-level laser for pattern hair loss
Option	How it acts	What it cannot do	How it is obtained	Discussed before starting
Topical minoxidil	Prolongs the growth phase of the hair cycle and enlarges miniaturised follicles where it is applied	Block DHT, or hold its effect once it is stopped	Pharmacy product; a doctor advises on its place in the plan	Scalp irritation, early shedding and unwanted facial hair where it runs
Oral minoxidil (off-label)	Acts on the same hair-cycle mechanism through the bloodstream	Block DHT; it acts on blood vessels throughout the body	Doctor's prescription after a review of blood pressure, heart history and current medicines	Fluid retention, a faster heartbeat, light-headedness and body hair growth
Oral finasteride	Blocks type II 5-alpha reductase, lowering the DHT that drives follicle miniaturisation	Restore follicles already lost; not for women who are or may become pregnant	Doctor's prescription after assessment	Changes in libido, erection or ejaculation in a minority, reported mood changes and lower PSA readings
Topical finasteride	Acts on the same enzyme, applied to the scalp for lower systemic exposure	Avoid absorption entirely; it is a different route, not a different medicine	Doctor's prescription after assessment	Scalp irritation, plus the same systemic precautions as the tablet
Low-level laser (at this practice, H2LT followed by low-level laser)	Red-spectrum light acting on cells in the follicle, used alongside medical therapy	Block DHT or revive a follicle that has already gone	Clinic-based; involves no medication	Its role as an adjunct rather than a standalone treatment

A woman in her forties running her fingers through her dark hair (illustrative image, not a patient) — Illustrative image — not a patient.

Who it suits, who should wait, who is referred on

Tends to suit

Androgenetic alopecia confirmed at assessment
Patients willing to attend monitoring and follow-up
Those who have discussed side effects and accept them
People who want a medical foundation before energy or topical treatments

Better to wait

Pregnancy, breastfeeding or planning pregnancy, for finasteride-type medicines
Hair loss from another cause such as thyroid disease or low iron until it is addressed
Unrealistic goals, such as restoring hair to a previous density

Referred on

Scarring alopecia or patchy hair loss, referred to a dermatology specialist
Abnormal blood results or suspected endocrine disease, referred for medical review

Who should not have this treatment

Pregnancy, breastfeeding or planning pregnancy, for finasteride-type medicines
Women who may become pregnant handling finasteride
Known allergy to a component of the medicine
Liver disease, for oral therapy, reviewed individually
Heart conditions or low blood pressure, for oral vasodilator-type medicines, reviewed individually
History of mood disorder or sexual side effects, discussed before starting

People whose hair loss is not androgenetic, or who expect certain regrowth without ongoing treatment or monitoring, tend to respond poorly, because medication is the wrong tool for them.

What happens, step by step

Consultation, scalp examination and review of medical history
Baseline blood tests and a written plan and quote
Prescription of the steps that suit the diagnosis, with side effects explained
Follow-up bloods and review, with steps adjusted according to response and tolerance

Risks, side effects and when to call

Scalp irritation can occur where topical products are applied. Because some topical finasteride is absorbed, the effects discussed for the tablet still apply: changes in libido, erection or ejaculation in a minority of men, reported mood changes, and lower PSA readings that matter for prostate screening. Other medicines in the protocol have their own effects, including early shedding, unwanted hair elsewhere or dizziness. Blood tests monitor how treatment is tolerated. Medicines are stopped or changed if side effects occur, and benefit varies between people.

Contact the clinic the same day if

New or worsening low mood, anxiety or thoughts of self-harm
Changes in libido, erection or ejaculation that persist
Rash, swelling of the face or lips, or difficulty breathing
Breast tenderness or lumps, or testicular pain
Dizziness, chest pain, fast heartbeat or swelling of the ankles

See what to do if something feels wrong after a treatment.

Aftercare

First 24 hours

Apply or take medicines exactly as prescribed
Wash hands after applying topical products
Avoid applying to broken or irritated scalp skin

First week

Expect some scalp dryness or irritation and report anything persistent
Keep a note of any new symptoms to discuss at review
Do not combine with other scalp products unless advised

Sun

Protect the scalp from strong sun if it is irritated

Skincare

Use a gentle shampoo and avoid harsh scalp scrubs during treatment

When to call

Low mood, rash, swelling of the face or lips, or breathing difficulty
Persistent sexual side effects or dizziness

A man in his thirties with short dark hair and a visible hairline (illustrative image, not a patient) — Illustrative image — not a patient.

Before you book

Declare all medicines and supplements, including any hormone or steroid products
Tell the clinic about pregnancy, breastfeeding, planning pregnancy and liver or heart conditions
Share any history of low mood, anxiety or sexual side effects
Avoid starting scalp products or supplements before assessment unless advised
Bring photographs of your hair over time, family history and any past blood results

What determines the fee

The fee depends on which medicines are prescribed, whether topical or oral routes or a supplement are used, the monitoring needed such as baseline and follow-up blood tests, and whether the plan is combined with laser or exosome-based topical products. Steps are introduced according to diagnosis, response and tolerance. A written quote is given at consultation after assessment, and the consultation also decides whether medication is advised at all, since not all thinning is androgenetic.

How quotes work at this practice: how we quote.

Myths we hear in clinic

“Topical finasteride has no side effects because it is applied on the scalp.”

Some is still absorbed, so the effects discussed for the tablet still apply.

“A laser or exosome product can replace medical treatment of DHT-driven thinning.”

These build on the medical foundation and do not stand in for it.

Frequently asked questions

Is topical finasteride safer than oral finasteride?

It is designed to reduce systemic exposure, and trials have reported smaller falls in blood DHT than with tablets, but some of the medicine is still absorbed. The same precautions are therefore considered, including sexual side effects, mood changes and the effect on PSA testing. Which route suits you is a prescribing decision made after assessment.

How much do anti-hair-loss medications cost in Singapore?

The fee depends on which medicines are prescribed, whether topical or oral routes or a supplement are used, the monitoring bloods needed and whether laser or exosome-based topical products are combined. Dr Sin Yong gives a written quote at consultation after assessment, and the consultation also decides whether medication is advised at all.

Are anti-hair-loss medications worth it?

They tend to be worthwhile for people with confirmed androgenetic alopecia who accept ongoing use, monitoring and discussed side effects. They are not worthwhile when thinning has another cause, such as thyroid disease, low iron or scarring alopecia, or when the goal is a return to earlier density. Assessment decides which applies.

How long do anti-hair-loss medications need to be taken?

Androgenetic alopecia is ongoing, so benefit generally depends on continued use, response, tolerance and monitoring. Influences include age, type of hair loss, which medicines are used and how the scalp responds. No duration can be promised, and the timing of any review is set at consultation with Dr Sin Yong.

What are the disadvantages of anti-hair-loss medications?

They need ongoing use and monitoring, and benefit varies. Side effects can include scalp irritation, changes in libido, erection or ejaculation in a minority of men, mood changes, early shedding and lower PSA readings. Some are not suitable in pregnancy. They treat the driver of thinning and do not suit every type of hair loss.

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Your next step

1. MessageWhatsApp +65 8023 7170 with what is bothering you. A reply comes from the clinic, not a bot.
2. AssessmentDr Sin Yong examines you himself on Orchard Road, with ultrasound where earlier filler is involved.
3. A plan in writingWhat he would do, what he would not, the fee factors, and the option of no treatment.

Every treatment is performed by Dr Sin Yong personally. Singapore Medical Council registered · invited to share his clinical expertise internationally as a Key Opinion Leader for CLASSYS, DEKA, HIRONIC, FOTONA, ALMA, LUTRONIC and ILOODA · HSA-registered devices · ultrasound-guided correction

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Frequently Asked Questions — Anti-Hair-Loss Medications

It depends on the diagnosis. For androgenetic hair loss in men, oral finasteride, which blocks the conversion of testosterone to DHT, is the usual prescription option and is taken under a doctor’s supervision. In women the choice differs, and pregnancy plans matter. Shedding driven by low iron, thyroid disease or recent illness is treated at its cause, which is why blood tests come before any long-term medicine is prescribed.

Yes. Oral hair-loss therapy requires prescription in Singapore and must be assessed and prescribed by a licensed doctor. Dr Sin Yong assesses and oversees oral therapy as part of the hair loss protocol.

Oral therapy must be taken continuously to maintain its effect. Stopping typically results in resumption of hair loss within 3–6 months. Most patients who respond well remain on it long-term.

The clinically formulated supplement used contains a proprietary blend including saw palmetto, biotin, zinc, selenium, and other micronutrients formulated to support hair follicle health and reduce shedding.

Yes. Medical therapy alone (oral and/or topical) can effectively slow hair loss and stimulate some regrowth. In-clinic treatments such as laser can be added alongside, but they are not prerequisites.

A baseline panel typically includes: serum ferritin, total iron, TIBC, TSH (thyroid), free T4, zinc, full blood count, liver function, and hormone panel (testosterone, DHT, SHBG) as appropriate. Results guide treatment selection and allow identification of correctable contributing deficiencies.

In Singapore, topical finasteride is obtained on a doctor's prescription after assessment, not bought as a cosmetic scalp product; it is step 3 of Dr Sin Yong's seven-step protocol. The scalp is examined and baseline bloods checked, because not all thinning is androgenetic. Side effects are discussed first: scalp irritation and, because some medicine is absorbed, the tablet's precautions on sexual side effects, mood and PSA readings. It is not for women who may become pregnant. See pattern hair loss.

Yes, on prescription after assessment; it is compounded or supplied as a licensed preparation depending on availability. Dr Sin Yong confirms the diagnosis with trichoscopy first, because topical finasteride does nothing for shedding or patchy loss that has another cause.

Medically reviewed by Dr Sin Yong, MBBS (NUS), MRCS (Edinburgh) · Last updated 21 October 2026 · Editorial policy