1. Can I wash my hair after applying Regaine®?
Yes, but allow the foam to fully dry before washing your hair or using water on your scalp.
What is this medication and what does it treat?
Regaine for Women is a medicine used to treat common female pattern hair loss in women aged 18–65 years.It helps to prevent further hair loss and encourage hair regrowth.
The active ingredient is minoxidil, which is thought to work by improving blood flow to the hair follicles on your scalp.
Who is this medication suitable for?
Regaine for Women is suitable for women. especially those with general thinning on the scalp rather than large or long-standing bald areas.
You may choose to use this product if you experience the following:
- Gradual thinning of hair on the top of the scalp
- A widening parting
- Reduced hair volume or fullness over time
- More hair than usual seen in the shower, on your brush, or on your pillow
- Hair that looks finer or weaker than before
- Overall decrease in density, especially around the crown
You should not use Regaine if you are allergic to minoxidil (the active ingredient).
Always check the ingredients list to ensure you are not allergic to any of the components.
How to use Regaine for women
Always use Regaine exactly as explained in the instructions.
- Make sure your hair and scalp are completely dry before applying the foam.
- Apply half a capful once a day to the area of the scalp where your hair is thinning.
- Gently massage the foam into the scalp with your fingertips.
- Wash your hands immediately after applying.
- Allow the foam to dry fully before using styling products, going to bed, or wearing hats.
- Use it every day to maintain results stopping treatment may cause hair loss to return.
If you are unsure how to use it, ask your doctor or pharmacist for advice.
Side effects
Like all medicines, this medicine can cause side effects, although not everybody gets them
Some users may experience the following:
- Scalp irritation (redness, dryness, itching, or flaking)
- Headache
- Unwanted facial hair growth (usually if the product drips down the face)
- Temporary increase in hair shedding in the first 2–6 weeks (this is usually a sign the treatment is working)
If you notice any of these, stop using Regaine and speak to your doctor.
In rare cases, you could experience an allergic reaction to Regaine.
Signs of an allergic reaction:
- Burning or stinging sensation after applying the foam
- Swelling of the face, lips, eyes, hands, or throat
- Difficulty breathing or swallowing
- Sudden dizziness or feeling faint
If you are concerned that you could be having an allergic reaction, seek emergency help immediately and stop using the product.
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Frequently Asked Questions
2. Does Regaine® leave any smell or residue?
The foam is designed to dry quickly and typically leaves no noticeable smell or greasy residue.
3.Can I apply Regaine® at night?
Yes. You can apply it at any time of day as long as it is used once daily and your scalp is dry.
4. Is it safe to use heat tools like hair dryers or straighteners?
Yes, but only after the foam has fully dried. Applying heat directly after use may reduce effectiveness.
Our Clinical Authors
Written by
Omar El-Gohary
CEO & Superintendent Pharmacist | GPhC Registration: 2059792
Medically reviewed by
Jabbar Ali
MPharm Clinical Lead | GPhC Registration: 2205490
This page has been written by a registered UK pharmacist and reviewed by our clinical team to ensure it is accurate, clear and reflects current clinical guidance.
Last medically reviewed: 20 August 2026
Last updated: 21 August 2026