Some people notice more hair in the shower or on their brush soon after starting minoxidil. It can be alarming, and it is one of the most common reasons people stop. This guide explains why shedding can happen, what is and is not typical, and when to contact your provider.
Why shedding can happen
Each hair follicle cycles through a growth phase, a short transition phase and a resting phase, after which the old hair sheds and the follicle starts a new cycle. Minoxidil is thought to act on this cycle. When starting, some follicles in the resting phase may move into a new growth phase at the same time, pushing out the old resting hairs together. The result can be a temporary increase in shedding.
What is typical
- Shedding, when it happens, usually appears early in treatment and is temporary.
- Not everyone experiences it.
- The hairs shed are usually fine, short resting hairs rather than long, healthy ones.
Early shedding on its own does not tell you whether treatment will or will not work for you. Responses vary from person to person.
When to contact your provider
Talk to your provider rather than stopping on your own if:
- Shedding is heavy, patchy or lasting longer than you were told to expect.
- You notice scalp redness, itching, pain, flaking or rash.
- You have dizziness, a racing heartbeat, swelling of the hands or feet, or unexplained weight gain, especially with oral minoxidil. Seek urgent care for chest pain or fainting.
- Shedding started alongside illness, stress, a new medication or weight loss, which can cause a separate type of shedding. See hair shedding: normal vs excessive.
Tips while you wait
- Take consistent photos in the same light so you can compare over time.
- Handle hair gently and avoid tight styles and heavy heat styling.
- Use the treatment only as prescribed. Using more does not reduce shedding and can increase side effects.
Other side effects of minoxidil
Topical minoxidil can cause scalp irritation and unwanted hair growth where the product spreads onto the face. Oral minoxidil can affect blood pressure and heart rate, which is why it requires a provider's review. Minoxidil is generally not recommended during pregnancy or breastfeeding. Read topical vs oral minoxidil.
Next step
If you are a Prescribed Essence patient, contact your care team with any concerns. If you want a licensed provider to review your hair loss, start your online consultation.
Prescription required for prescription treatment. A licensed provider decides whether treatment is appropriate. Compounded medications are prepared by a licensed pharmacy for an individual patient and are not FDA-approved. Individual results vary. Prescribed Essence currently serves patients in California, Colorado, Florida and New York.
