oral glutathione absorption liposomal benefits study outperforms plain glutathione in uptake, cell regeneration and systemic availability: evidence from cellular and human models oral glutathione absorption rate Oral

AST (3,3-dihydroxy-,-carotene-4,4-dione) is a xanthophyll carotenoid composed of two terminal -ionone rings linked by a conjugated polyene chain, with a molecular formula of C40H52O4 and 13 conjugated double bonds that contribute to its distinctive red-orange color and antioxidant properties

We do not know what systemic concentration is achieved, how long it persists, which tissues it reaches, or what effects it produces in a living human being at injectable doses

Pigmentation & redness support (niacinamide, vitamin C derivative) = tone & radiance improvement

What exact substance, salt form, formulation, concentration, and route are being proposed

broader name gives room to expand