lookindex
Peptides
Evidence grades
Peptides for hair
Sorted by strength of evidence, never by popularity.
All
Skin
Hair
Fat loss
Tanning
Muscle
Recovery
Peptide
Main risk
Cost a month
Grade
Collagen peptides
Supplement
Mostly wasted money, and animal or fish allergens
$12 to $40
B
GHK-Cu
Skincare
Injected forms: immune reactions
$15 to $60
C