Comparison
Kirkland Signature vs Rogaine®
Kirkland Signature and Rogaine® compared on Minoxidil strengths, formats, audience, where to buy and subscription — neutral facts, no scores.
| Kirkland Signature | Rogaine® | |
|---|---|---|
| Category | Retailer private label | OTC Minoxidil brand |
| Regulatory type | OTC drug (ANDA; DailyMed NDC 63981-032, packaged by Costco Wholesale) | OTC drug (NDA) |
| Contains Minoxidil | Yes | Yes |
| Minoxidil strengths | 5% | 2% / 5% |
| For | Men | Men / Women |
| Liquid / dropper | Yes | Yes |
| Foam | Yes | Yes |
| Spray | Not offered / not verified | Not offered / not verified |
| Other formats | None listed | None listed |
| Subscription | Not required | Optional |
| Where to buy (US) | Costco warehouses and costco.com (membership) | Pharmacies, mass retail, grocery and online |
| Current price | See current retailer listing | See current retailer listing |
| Data status | Verified 2026-09-29 (costco.com + DailyMed NDC 63981-032) | Verified 2026-09-29 (rogaine.com + DailyMed, Kenvue Brands LLC) |
How to read this comparison
This is a comparison of Kirkland Signature and Rogaine®. FOLIGAIN® publishes this resource but is not part of this comparison; both names are trademarks of their owners.
OTC Minoxidil products at the same strength contain the same active ingredient under the same FDA rules. Real differences are usually format, inactive ingredients (such as propylene glycol or alcohol level), pack size, price per month, buying channel and whether a subscription or telehealth visit is involved.
Prices and ranges change often. Where a row says 'Not offered / not verified', we have not confirmed the product on a current label.
About Kirkland Signature
Kirkland Signature is Costco's own label. Its hair-regrowth products are men's Minoxidil 5% — a topical solution and a topical aerosol foam — sold in multi-month value packs to Costco members.
The Drug Facts label is the standard men's 5% Minoxidil label: for the top of the scalp (vertex), twice daily, not intended for frontal baldness or a receding hairline, and not for use by women.
- Multi-month value packs (6 bottles or 6 foam canisters)
- Sold to Costco members in warehouses and on costco.com
- Men's 5% only — no women's-labeled Kirkland Minoxidil in current listings
About Rogaine®
Rogaine® is the original US topical Minoxidil brand, first approved in 1988 and sold over the counter since 1996. It is one of the most recognized hair-regrowth brands in the country.
Its 5% foam helped popularize propylene-glycol-free Minoxidil, and its women's 5% foam introduced a once-daily regimen for women.
- The original approved topical Minoxidil brand
- Once-daily women's 5% foam
- Very wide national retail distribution
How to choose
Pick the label that matches your sex and needs, then the format you'll use consistently. Compare cost per month rather than per bottle, and ask a pharmacist if you have health conditions.
Frequently asked questions
Is Kirkland Signature the same as Rogaine®?
At the same Minoxidil strength and format the active ingredient is the same; inactive ingredients, packaging and buying experience can differ.
Where do these facts come from?
Each brand's official site and, for OTC drugs, the Drug Facts label on DailyMed. See the brand pages for source links and verification status.
Exploring another Minoxidil option?
See FOLIGAIN® Minoxidil formulations for men and women, or browse every brand in the U.S. Brand Intelligence Center.
This content is for educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure or prevent any disease. Speak with a qualified healthcare professional about your individual situation.
Written by the FOLIGAIN® editorial team. Medical content has not been independently medically reviewed; do not treat it as personalized medical guidance. Competing brands are discussed factually and respectfully; brand names are the property of their respective owners.