Cosmetovigilance in the Netherlands: Overview of the Period 2009-2014

A user is concerned that prolonged use of valisone (betamethasone) and clotrimazole solution for scalp dermatitis may be causing hair thinning and loss. They noticed thinning in the area where the solution was applied.

The user is allergic to minoxidil and experienced severe itching and redness. They are considering alternatives like finasteride, dutasteride, and dermarolling for hair loss treatment.

The user experienced scalp inflammation and rapid hair loss after using minoxidil, despite initial success. Suggestions included switching to minoxidil foam, using oils, trying aspirin, and considering RU58841 for inflammation and hair loss management.

Switching from liquid to foam minoxidil led to hair loss for OP, possibly due to a second shedding cycle. OP experienced allergic reactions to propylene glycol in the liquid form, causing dandruff and itchiness, which improved after switching to foam.

The conversation discusses the safety and use of ketoconazole shampoo for hair loss, with mentions of zinc pyrithione and selenium sulfide. Users debate the safety of these ingredients, particularly zinc pyrithione, and share opinions on regulatory differences between Europe and the US.

Zinc pyrithione and piroctone olamine are effective for reducing hair shedding, possibly more so than ketoconazole. There is a concern about zinc pyrithione shampoo interfering with minoxidil, but it's unclear if this is proven.