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A purity level of 99% or higher, as provided by Biopeptides Epitalon (Epithalon), is generally preferred for accurate and reproducible research results.

(4) Westrin A, Ekman R, Trskman-Bendz L

Prescribers can adjust hydroquinone beyond the commercial 4% ceiling (up to 8% for refractory cases), swap the steroid component based on patient sensitivity, add tranexamic acid or cysteamine for resistant pigmentation, and choose vehicle bases optimized for different skin types and climates

Its antioxidant activity protects sperm and oocytes from reactive oxygen species, reducing DNA damage

This antioxidant support helps protect newly synthesized collagen and elastin from oxidative damage that would otherwise degrade these structures

Found in various regions of the brain and peripheral tissues, DSIP has been of scientific interest for decades due to its unique connection to circadian rhythm, neuroendocrine activity, and stress response