Thiolhistidine betaineis a naturally occurringamino acidand is a thioure a derivative ofhistidine, containing asulfuratom on theimidazolering.This compound occurs in relatively few organisms, notablyactinomycetota,cyanobacteria, and certainfungi.Ergothioneine was discovered in 1909 and named after theergotfungus from which it was first purified,with its structure being determined in 1911. Application: Efficacy: Natural super antioxidant, anti-photoaging, anti-yellowing and brightening, stable color protection, skin protection. Formulation application: suitable for various systems such as water, essence, facial mask, cream lotion, freeze-dried powder, etc. Recipe suggestion: It is recommended to dissolve the solid powder with water evenly in advance at 45°C and then add it to the material and stir it evenly. Recommended dosage: 0.006 % - 0.1 % (pure)