Solabia Group, 2008.
- 2 groups of 16 hyperseborrheic female volunteers, 19-25 years old presenting with oily facial skin
- Treatment over 28 days with twice daily application of 1% Zinc PCA cream or placebo on forehead
- Sebum was measured in forehead zones using a sebumeter
- Study shows Zinc PCA 1% presents a significant decrease of sebum rate after 28 days while no significant variations were observed in the placebo group before and after use of the product