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Why have I noticed a mustache growing despite no medicines?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I am a female, 20 years old, and I have noticed a mustache growing. I am worried about it. I am not taking any medications, so what could be the cause?

Kindly advise.

Hello,

Welcome to icliniq.com.

I completely understand the concern. Please know that this is a very common issue, and many young women experience similar worries.

Facial hair over the upper lip, commonly referred to as a mustache, in females is usually related to increased sensitivity of hair follicles to androgens or a mild increase in these hormones. In many cases, hormone levels are within the normal range, but the skin and hair follicles respond more strongly to them. This is especially noticeable during the late teenage years and early adulthood, when hormonal balance is still stabilizing. Genetics also plays a significant role. If women in the family have facial hair, similar patterns may be seen even when all test results are normal.

One important condition that is considered in such situations is polycystic ovary syndrome (PCOS). PCOS may present with facial hair growth, irregular menstrual cycles, acne, weight gain, or thinning of scalp hair, although not all symptoms may be present at the same time. In some individuals, facial hair may be the first or only noticeable sign.

Other less common causes include thyroid disorders, elevated prolactin levels, or adrenal hormone imbalance. However, in many young women with mild upper-lip hair growth, no underlying medical disorder is identified, and the condition is classified as idiopathic or familial hirsutism.

At this stage, a basic medical evaluation is recommended rather than undue concern. A dermatologist or gynecologist may advise simple blood investigations such as:

  • A total testosterone.

  • Dehydroepiandrosterone sulfate (DHEAS).

  • Luteinizing hormone (LH) to follicle-stimulating hormone (FSH) ratio.

  • Prolactin levels.

  • Thyroid function tests.

A pelvic ultrasound examination may also be suggested if polycystic ovary syndrome is suspected. These investigations help determine whether the hair growth is hormonally driven or genetically influenced.

Management depends on the underlying cause and the severity of hair growth. For mild facial hair, cosmetic methods such as threading, waxing, bleaching, or laser hair reduction are safe and effective options. Laser hair reduction, when performed correctly, provides long-term reduction in hair growth.

If a hormonal imbalance is identified, medical treatment with hormone-regulating therapy may be required to prevent further hair growth. Such treatment is always initiated only after proper evaluation. Lifestyle measures, including maintaining a healthy body weight, regular physical activity, and a balanced diet, also support natural hormonal regulation.

Most importantly, this condition does not reduce femininity or self-worth. Many healthy and confident women experience the same concern, and it is highly manageable with appropriate guidance and care.

I hope you are satisfied with my answer. For further queries, you can consult me at iCliniq.

Thank you.

Answered byDr. Misha Saghir

Medically reviewed byiCliniq medical review team

Published At June 2, 2026
Reviewed AtJune 2, 2026

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