doi:10.1016/s0196-9781(03)00040-8 Delta Sleep Inducing Peptide (DSIP) is a nonapeptide that was initially isolated from the cerebral venous blood of rabbits and hypothesized to act as a sleep aid
The glycinate form offers superior absorption compared to oxide or carbonate forms, with bioavailability rates reaching 80-90%
Oakley AJ, Yamada T, Liu D, Coggan M, Clark AG, Board PG
Additionally, this route can facilitate faster absorption into the bloodstream via the nasal mucosa, enabling a quicker onset of effects
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Makes other brightening products in your routine work better Suitable For: Dull skin, hyperpigmentation, uneven skin tone Why It Works: Glutathione is known to block melanin production, while Vitamin C recycles and extends Glutathione's effectiveness