Stearoyl glutamic acid sodium (Sodium stearoyl glutamate) is a anionic emulsifier, that can be used as the ingredient of cosmetic. Stearoyl glutamic acid sodium is also an anionic surfactant and an amino acid alkyl amide sensitizer, that may cause allergic contact dermatitis[1][2][3].
[1]. Guilherme Carneiro Leal, et al. Development, characterization, and evaluation by cutaneous bioengineering of a natural emulsion, to provide a standardized vehicle base for topical compounded preparations. Research, Society and Development, [S. l.], v.11, n.16, p.e509111638290, 2022.
[2]. Pralong P, Dendooven E, Aerts O. Sodium stearoyl glutamate: Another amino acid alkyl amide sensitizer in cosmetics. Contact Dermatitis. 2022 Nov;87(5):453-454.
[3]. Nazir I, Asim MH, Dizdarevi? A, Bernkop-SchnÜrch A. Self-emulsifying drug delivery systems: Impact of stability of drophobic ion pairs on drug release. Int J Pharm. 2019 Apr 20;561:197-205.