Evidence-Based Beauty: Minoxidil Shampoo in Women’s Hair Care

Beauty is not just skin deep; it extends to every aspect of our appearance, including our hair. In recent years, the concept of evidence-based beauty has gained prominence. It emphasises the importance of relying on scientific research and proven ingredients for effective results. One product that stands out in women’s hair care is minoxidil shampoo. Consult a doctor at Dame, where you will be guided on hair regrowth. 

The Origins of Minoxidil

In the late 1950s, the Upjohn Company, now under Pifzer’s ownership, initially formulated minoxidil with the intention of treating ulcers. However, the outcome fell short of expectations, as the treatment proved ineffective for ulcers. Surprisingly, the disappointment paved the way for a groundbreaking revelation – minoxidil’s ability to widen blood vessels and significantly lower blood pressure.

Fast forward to 1979, the FDA granted approval for oral minoxidil to treat severe high blood pressure. The turning point occurred during clinical trials when researchers stumbled upon an unexpected phenomenon: a patient not only experienced a remarkable reduction in blood pressure but also sprouted new, dark and thick hair on the top of his head – the type typically lost in baldness. 

Further investigations revealed that as many as 80% of patients undergoing oral minoxidil treatment encountered a fascinating side effect termed hypertrichosis – an increased growth of hair on the face, arms back and chest. Seizing upon this revelation, researchers developed topical formulations of minoxidil.

In August 1988, the FDA approved topical minoxidil, marketed as “Rogaine”, specifically for the treatment of male pattern baldness. Subsequently in 1992, the FDA extended its approval to include the treatment of female pattern baldness. This accidental discovery has since paved the way for minoxidil’s widespread use in combating hair loss, transforming the landscape of hair care. 

Understanding Female Hair Loss

Female pattern hair loss or female pattern alopecia is the most common type of female hair loss. Traditionally, people also refer to it as female androgenetic alopecia.

Patterns and Prevalence

In contrast to men, women generally experience a more diffuse pattern of hair loss, commonly impacting the crown and frontal regions of the scalp. Unlike men, women seldom encounter the development of entirely bald areas. Although there is no documented prevalence of female pattern hair loss in Singapore, research indicates that its occurrence rises with age. This phenomenon is particularly prominent after menopause, with studies suggesting that 50% of women will grapple with it at some point in their lives. 

Hereditary and Hormonal Factors

In male androgenetic alopecia, it is widely accepted that genetics and the male hormone, dihydrotestosterone play an important causative role.However, little is known about the genetic basis and inheritance pattern of female pattern hair loss. Also, the understanding of dihydrotestosterone in the development of female pattern hair loss is not complete. In most women with female pattern hair loss, levels of dihydrotestosterone are normal. 

Decoding the Hair Growth Cycle

The hair follicle is very much living and alive, going through a natural growth cycle. It is a protective structure that envelopes the lower part of the visible hair shaft. Each follicle contains blood vessels that nurture new hair growth. In female pattern hair loss, various factors trigger a shortened growth phase in affected hair follicles. This leads to the development of abnormally short and thin hair shafts. 

The Science Behind Minoxidil Shampoo 

Each of our hair follicles contains blood vessels that nurture new hair growth. Apart from female pattern hair loss, people can use minoxidil shampoo to support hair regrowth in conditions of female hair loss, such a telogen effluvium. Minoxidil helps to strengthen existing hair follicles and encourage them to grow in the following ways:

Increases blood flow 

Minoxidil shampoo works primarily by its ability to dilate small blood vessels, improving blood flow to hair follicles. This increased blood supply delivers more nutrients and oxygen to the follicles, creating a conducive environment for hair growth.

Prolonging growth phase

Minoxidil stimulates hair follicles in the growth phase (anagen phase) and prolongs this phase. During the anagen phase, the hair follicles actively produce keratin, the protein that makes up the hair shaft. Extending the anagen phase can lead to the production of longer and thicker hair strands, enhancing overall hair volume and density. By extending the growth phase of the hair, the resting phase (telogen), where hair shedding occurs, is reduced. Reduction in shedding contributes to the appearance of fuller and denser hair. 

Awaken dormant hair follicles

Minoxidil stimulates hair follicles to move from the dormant phase (where they are not actively growing) to the active growth phase. When hair follicles remain dormant for an extended period, they may contribute to thinning or hair loss. The process of “awakening” dormant hair follicles can lead to the regeneration of new hair strands. This contributes to an overall increase in hair density and thickness. 

Minoxidil Shampoo in Singapore

Minoxidil shampoo or topical minoxidil is the most extensively studied medication for the treatment of female pattern hair loss. It has shown effectiveness and a good safety profile in clinical trials. The FDA recognizes it as the only treatment option for female pattern hair loss. Medical guidelines also recommend minoxidil shampoo as the first line treatment option for female pattern hair loss. 

Availability

In Singapore, minoxidil shampoo is available over-the-counter, without a prescription. Although it can be purchased off the shelves, it is classified as a therapeutic product. This means that the Health Sciences Authority (HSA) in Singapore regulates minoxidil shampoo, and it is governed by the Health Products Act. Basically, HSA ensures that minoxidil shampoo products meet standards of safety, quality, and efficacy.

Achieving Optimal Results

Women who start applying minoxidil shampoo in the early stages of their hair loss, and who have smaller areas of hair loss, respond best to treatment. A typical regimen involves the application of topical 5% minoxidil once daily to the entire scalp. Twice daily application of minoxidil 2% is an alternative. 

Contrary to its name, use minoxidil shampoo as a scalp treatment, not a hair treatment. Apply it daily to the affected areas on a dry scalp, exactly as prescribed, for maximum benefit. Do not expect the beneficial effects on hair maintenance and growth to be evident immediately. Consider a full year of daily, consistent use necessary to assess its effectiveness.

Addressing Common Concerns

Initial Hair Shedding

Occasionally, increased hair shedding can occur within the first two to eight weeks of treatment with minoxidil shampoo for female pattern hair loss. Minoxidil stimulates hair follicles to transit from the resting phase to the active growth phase. This transition can lead to the release of hairs that were in the resting phase, causing a temporary increase in hair shedding. It’s like making room for new, healthier hair to grow. So, if you notice more hair falling out initially, don’t worry – it’s often a sign that the treatment is encouraging the growth of new, stronger hair.

Hair shedding usually decreases within two months of treatment. You may observe hair growth within 4-8 months, and it stabilizes at 12-18 months. This is why experts typically recommend a full year of hair loss treatment with minoxidil shampoo.

Side Effects

Side effects from minoxidil shampoo are infrequent. The most common side effect experienced is scalp irritation. Stop using minoxidil if the redness or irritation continues. Reducing the dose or frequency of minoxidil application may help with this side effect. 

A foam formulation of minoxidil shampoo can also minimise this side effect. This is due to the absence of propylene glycol, a common contact allergen, in this formulation. Oral minoxidil may be an alternative for women who are unable to tolerate the use of minoxidil shampoo.  

Read our article comparing the different shampoo formulations: minoxidil foam and minoxidil solution.

Proper Application

Using minoxidil shampoo correctly is essential to achieving best results. At Dame, we address your concerns with the proper application of minoxidil shampoo.

Start with a Clean Scalp: Ensure your scalp and hair are clean and dry before applying the shampoo.

Measure and Apply: Apply the amount prescribed to the area of the scalp being treated. Follow your doctor’s instructions on how to apply the solution, using the applicator provided. Gently rub the solution into the scalp in the area where you are experiencing hair loss. Do this once or twice a day, as directed by your doctor. It is important that the recommended dosage is followed. Using an increased dose increases the risk of side effects but does not improve hair growth.

Clean Up: Wash and dry your hands after applying the product. If it accidentally gets into your eyes, mouth, or nose, rinse these areas thoroughly right away. 

Don’t Double Up: If you miss an application, don’t double the dose. Stick to the recommended amount.  

Give it Time: Allow 2-4 hours for the medication to be absorbed into the scalp. During this time, avoid activities like bathing or swimming that could wash away or dilute the shampoo treatment. 

Night Application: If applying at night, do it 2 to 4 hours before bedtime. Be cautious, as the product may stain clothing and bed linen if not fully dry. 

No Hair Dryer: Avoid using a hair dryer on the scalp after applying the product. This can reduce its effectiveness. 

Styling Products: If you use other hair products, for styling or colouring, apply them only after the minoxidil has dried. Generally, these products do not interfere with the effectiveness of minoxidil. 

Alternative Solutions

While minoxidil shampoo proves effective for treating hair loss, some women struggle to consistently apply a scalp treatment once or twice a day. Factors such as possible changes in hair texture and potential scalp irritation exacerbated by the high humidity in Singapore can be deterrents. As a result, some women seek alternatives, including exploring oral options. 

Oral Minoxidil

Recent evidence suggests that a low dose of oral minoxidil can be both safe and effective in treating female pattern hair loss. However, further studies are needed to fully establish its role in addressing female hair loss. 

As of now, there is no oral minoxidil product registered with the HSA in Singapore. The FDA continues to recommend topical minoxidil for treating female pattern hair loss. Nevertheless, in Singapore, doctors have the option to apply for a special licence to import oral minoxidil. They can prescribe the medication off-label on a case-by-case basis. To learn more, you can schedule an appointment with Dame’s doctors.

Explore a detailed comparison between topical and oral minoxidil in our article. 

Oral Anti-Androgens

Increasingly, medical guidelines recommend adding an oral anti-androgen to minoxidil shampoo in the treatment of female pattern hair loss. Two oral anti-androgen medications recommended are spironolactone and finasteride. 

Spironolactone and finasteride work to reduce the production of hormones that contribute to androgenetic alopecia or female pattern hair loss. It usually takes about six months or longer to understand how the medication is working. Both spironolactone and finasteride should not be used during pregnancy. Reliable birth control has to be used in women of childbearing age who are taking this medication.

The use of spironolactone and finasteride for the treatment of female pattern hair loss is still currently an off-label use. Doctors can prescribe it on a case-by-case basis, especially for post-menopausal women when minoxidil shampoo has been ineffective. 

Dame Women’s Health: From Thinning to Thriving

In the dynamic landscape of women’s hair care, where trends come and go, evidence-based solutions endure. Minoxidil shampoo is not simply just a product, it is a testament to the marriage of science and beauty. Achieving hair regrowth is a gradual process, demanding patience. At Dame, we embark on a hair journey with you – from thinning hair to thriving, healthy hair. 

Fix your hair growth problems today, book a consultation here with Dame. 

Frequently Asked Questions (FAQs)

Q: How often should I use minoxidil shampoo for optimal results?

For optimal results, it is recommended to use minoxidil shampoo as directed on the product label. For female pattern hair loss, a typical regimen involves the application of topical 5% minoxidil once daily to the entire scalp. Twice daily application of minoxidil 2% is an alternative. 

Q: Can minoxidil shampoo be used on coloured or chemically-treated hair?

Yes, minoxidil is generally safe for use on coloured or chemically-treated hair. However, it is always advisable to check the product instructions and, if in doubt, consult with a hair care professional. 

Q: Are there any potential side effects of using minoxidil shampoo?

While side effects are rare, some women may experience mild scalp irritation or dryness. It is essential to follow usage instructions and discontinue use if adverse reactions occur. If concerns persist, speak to our doctor at Dame. 

Q: How soon can I expect visible results with minoxidil shampoo?

Visible results may vary among individuals. Hair loss treatment with minoxidil shampoo takes at least four months of consistent use to exhibit a visible effect. Patience is key as hair growth is a gradual process. 

Q: Is minoxidil shampoo suitable for all hair types?

Yes, minoxidil shampoo is a scalp treatment formulated to be suitable for various hair types. A minority of women report scalp irritation and dryness with the use of minoxidil shampoo. Always speak to your hair care professional to select products that match your specific hair care needs.  

Q: Can pregnant or breastfeeding women use minoxidil shampoo?

Due to the lack of available information, the use of minoxidil shampoo is generally not recommended in pregnant or breastfeeding women. Always consult your doctor at Dame for your hair loss concerns. Read more about natural hair regrowth solutions in Singapore.

Q: Where can I get minoxidil shampoo?

Minoxidil shampoo can be purchased without a prescription, over-the-counter in Singapore. It is often available at pharmacies, retail stores, or online. Read our guide on how to stay safe when buying minoxidil shampoo online in Singapore.