glutathione lightening serum 7 Dark Spot Glutathione Serum for Dark Spot

5-Amino-1MQ Vials (10 mg each): 1 week (5 mg/day = 35 mg total) 4 vials 2 weeks (5 mg/day = 70 mg total) 7 vials 4 weeks (5 mg/day = 140 mg total) 14 vials Insulin Syringes (U-100, 1 mL): 1 week (once daily): 7 syringes 2 weeks (once daily): 14 syringes 4 weeks (once daily): 28 syringes Bacteriostatic Water (10 mL bottles): Use 2.0 mL per vial for reconstitution

doi: 10.1056/NEJMoa1005359 [PubMed] 22809652 Davis MP

(This is the amount set by the EU for food labelling purposes and has been retained under UK food law.) Vitamin C is a water soluble vitamin, and so when the body becomes saturated with vitamin C, any excess is simply excreted in urine

Its stability in an acidic gastric environment distinguishes it from other regenerative peptides (Sikiric et al., Curr Pharm Des 2018)

[2] A 2023 study in the Journal of Cosmetic Dermatology found GHK-Cu and hyaluronic acid combined to synergistically upregulate collagen types I, IV, and VII