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Is minoxidil 5 or 10 better?

Conclusion: Five percent of topical minoxidil was moderately superior to 10% topical minoxidil and placebo in increasing hair regrowth opposite to the expected, the irritation was marked for 10% topical minoxidil.

Is minoxidil 2 or 5 better?

Researchers found that 5% minoxidil seemed to be better suited for promoting hair growth and increasing hair count. Even so, 2% topical minoxidil was found to be superior to the placebo treatment for improving hair growth, and both concentrations were well-tolerated by the women.