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Bernstein Medical - Center for Hair Restoration
Hair Restoration Answers

Allergic Reaction to Rogaine Liquid but Not Foam?

Q: Our dermatologist originally suggested our son use the 5% Rogaine and he developed an allergic reaction to it. Allergy tests confirmed it was the propylene glycol causing the reaction. I understand that Rogaine foam has 5% minoxidil in it but no propylene glycol. Is that correct? — B.M., Lower East Side, N.Y.

A: In addition to minoxidil 5%, Rogaine Foam contains: butane, butylated hydroxytoluene, cetyl alcohol, citric acid, fragrance, glycerin, isobutane, lactic acid, polysorbate 60, propane, purified water, SD alcohol 40-B, stearyl alcohol — but no propylene glycol.

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Hair Restoration Answers

How is Rogaine for Women Different from Men’s Formula? [2020 Update]

Q: What is the difference between Rogaine for men and Rogaine for women? — G.K., Hawthorne, N.Y.

A: Rogaine for men is 5% minoxidil and Rogaine for women is 2%. Another difference is that the 5% solution has propylene glycol in it whereas the 2% is alcohol based. The propylene glycol helps the minoxidil penetrate the skin better and makes the medication more effective. Although both the alcohol and propylene glycol based preparations can irritate the scalp, propylene glycol can cause actual allergic reactions in those who are sensitive.

Propylene glycol is greasier to have on the scalp than the alcohol based formulation. For patients who complain of the greasiness, we advise Minoxidil 5% at bedtime and 2% in the AM.

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