15 Some research studies stated that about 97% of human diseases are monogenic diseases associated with genes
No study has looked at whether this occurs, in whom, at what frequency, or whether it's meaningfully different from the normal range of skin variation people experience regardless of what products they're using
Studies comparing routes consistently show IV glutathione produces five to ten times higher peak plasma concentrations than oral dosing (PubMed PMID: 24791752)
[11] Popa-Wagner, A., Agar, E., Kilic, E., Mf, D., Mc, B., Sp, O., Furkan Dasdelen, M., Er, S., Kaplan, B., Celik, S., Caglar Beker, M., Orhan, C., Tuzcu, M., Sahin, N., Mamedova, H., Sylla, S., Komorowski, J., Ojalvo, S., & Sahin, K
OA: Conceptualization, Supervision, Validation, Writing original draft