Frequently asked questions
Why is Kirkland Minoxidil not available in the UK?
Kirkland Signature is Costco’s own store brand, and this minoxidil is sold through Costco in the US. It isn’t listed in Costco’s UK range, so UK customers have no easy way to buy it. We supply it to UK customers and ship it from within the UK, so there is no waiting for an overseas order.
Is Costco Kirkland Minoxidil real?
Yes. Kirkland Signature is Costco’s own-label line, and this is the 5% minoxidil solution it sells. The same active ingredient as Regaine is behind it. The main thing to watch for is fakes sold through marketplaces, so check that the packaging matches the box shown on our product page and buy from a seller who can show you where the stock comes from.
What are the 5 disadvantages of using minoxidil?
- Results take time. Most people wait 3-4 months before they see real change.
- Early shedding. Some hair falls out in the first weeks before new growth comes in.
- Scalp irritation. Dryness, itching or flaking can happen, mostly with the liquid.
- It’s ongoing. If you stop, the hair it was keeping gradually goes.
- Unwanted hair. If it drips or transfers onto the face or neck, hair can grow there too.
Does Kirkland minoxidil actually work?
Yes, Kirkland Minoxidil works — it’s clinically proven 5% minoxidil that stops hair loss and promotes regrowth in ~40-60% of men (especially at the crown) with consistent use (twice daily, 3-6+ months). Results vary by genetics and stage, but reviews and studies confirm it’s effective for many.
What is the best brand of minoxidil in the UK?
Best brand in the UK: No single “best” — effectiveness depends on 5% minoxidil, not the brand. Top options:
• Regaine (Rogaine in UK) — reliable, widely available (Boots, Superdrug), foam version gentler on sensitive skin.
• Kirkland — best value (cheapest original 5%, same results).
Many experts rank Kirkland highest for budget, Regaine for comfort/foam.
Is Kirkland as good as Regaine?
Yes — same active ingredient (5% minoxidil), same proven results. Difference: Kirkland is much cheaper (3-5x less), but may feel greasier (more propylene glycol); Regaine foam is often milder. Most users see no drop in effectiveness when switching.
Can I skip minoxidil for 1 week?
One missed week won’t wipe out months of progress, but it can slow things down and some people notice a little extra shedding. Just restart as normal. Don’t double up to make up for it. Longer or regular breaks are what cause real loss.
What not to do while on minoxidil?
- Don’t apply it to broken, sunburnt or irritated skin.
- Don’t use more than the directed amount, because extra doesn’t speed up results and raises the risk of side effects.
- Don’t wash your hair for at least four hours after applying.
- Don’t let it get on your face, and wash your hands after applying.
- Keep it away from children and pets. Minoxidil is toxic to cats, so don’t let a cat touch the treated area or your pillow before it’s dry.