Same active drug, two formulations. The liquid (solution) often comes in higher strengths and spreads easily, but its propylene glycol can irritate or flake the scalp for some people. The foam skips propylene glycol, so it is gentler and dries fast (easier to keep up daily), though it can be slightly fiddlier to work down to the scalp through hair. Both work; pick the one you will actually use consistently, and switch to foam if the liquid irritates.
Try the free self-check →Sources: AGA review (CCID) ↗
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Not medical advice. General education only; it does not replace diagnosis or treatment by a licensed professional. Consult a board-certified dermatologist before starting, stopping or changing any treatment.
⚠️ When to see a doctor — don’t self-treat
- Sudden patchy or circular bald spots
- Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
- Broken hairs or rapid loss
- Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
- Loss right after a new medication
- Any hair loss in a child