Final Amended Safety Assessment of Sodium Sulfate as Used in Cosmetics

Abstract

The Expert Panel for Cosmetic Ingredient Safety (Panel) reopened the safety assessment of Sodium Sulfate, a cosmetic ingredient that is an inorganic salt reported to function in cosmetics as a viscosity increasing agent—aqueous. The Panel reviewed the relevant new data for the ingredient, including frequency of use and concentration of use, and considered data from the previous Panel assessment. The Panel concluded that Sodium Sulfate is safe in cosmetics in the present practices of use and concentrations described in this safety assessment when formulated to be nonirritating.

Understanding the chemical and mineralogical composition of commercial henna and jagua tattoos and dyes—a multi-analytical approach

“…Halite is used as an emulsifying, anticaking, and isotonic agent to manufacture pharmaceuticals [26], but also as a viscosity regulator [31] and thickener [32] in the cosmetics industry. Thenardite, a sodium sulfate commonly used as a viscosityincreasing agent in the production of cosmetics [33], was identified in samples HT-8, HT-13, and HT-14. Sodium 1-pentanesulfonate was tentatively identified in samples HT-2, HT-5, HT-8, HT-10, HT-12, and HT-15.…”

Safety Assessment of Zinc Salts as Used in Cosmetics

“…Some of the constituent acids or salts, related to the zinc salt ingredients in this report, have been reviewed previously by the Panel; a summary of safety conclusions for those ingredients 2-5,8-18 is included in this report (Table 2). Those original reports are also available on the CIR website.…”

“…6,7 For complete and detailed information, please refer to the original documents, which are available on the Cosmetic Ingredient Review (CIR) website (https://www.cir-safety.org/ ingredients). Some of the constituent acids or salts, related to the zinc salt ingredients in this report, have been reviewed previously by the Panel; a summary of safety conclusions for those ingredients [2][3][4][5][8][9][10][11][12][13][14][15][16][17][18] is included in this report (Table 2). Those original reports are also available on the CIR website.…”