side effects of intravenous glutathione for skin lightening: Inadequate safety data 5 Benefits of Glutathione IV
Description
Enhanced elastin content directly correlates with improved skin elasticity and rebound, creating the plumping effect sought by premium anti-aging products

Why do some peptides do this and others never do

Likely, as pointed out [97], this particular beneficial vascular compensatory effect may also essentially contribute to the large wound healing potential including proper healing of both tendon [18,19,20,22,27,28] and muscle [21,35,36,37], and resulting particular myotendinous junction healing

Biochemistry 52 , 61376144 (2013)
