does beetroot have glutathione as a functional food with huge health benefits: Antioxidant, antitumor, physical function, and chronic metabolomics activity 9 Impressive Health Benefits of

[DOI] [PMC free article] [PubMed] [Google Scholar] 45.Kang R., Kroemer G., Tang D

**Tretinoin:** Best for treating acne and deep wrinkles, but may require careful introduction to avoid irritation

People may also find it painful and worry about its effects on their appearance

Most peptide evidence comes from animal models, small studies, and mechanistic extrapolation

One small study of patients with early, untreated Parkinsons disease given high dose intravenous glutathione twice a day for 30 days showed symptom improvement that lasted for 2-4 months after treatment ended (17)

Though GHK-Cu is far more popular in skin care products, GHK on its own can also provide some benefits