As of the time of writing, there is no high-quality randomised controlled trial establishing the efficacy of IV glutathione for cosmetic skin brightening in a way that would meet the standard required for regulatory approval
PubMed Jastreboff, A.M., Aronne, L.J., Ahmad, N.N., Wharton, S., Connery, L., Alves, B., et al
For individuals who take Tylenol regularly or who have additional stressors on their liver, supportive strategies may be necessary
In another 12-week facial study of 67 women between 50 and 59 years with mild to advanced photodamage, a GHK-Cu cream was applied twice daily and improved skin laxity, clarity, firmness and appearance, reduced fine lines, coarse wrinkles and mottled pigmentation, and increased skin density, and thickness