Skin & cosmetic
The one category where human evidence is reasonably solid — all of it generated topically, none of it transferable to injection.
3 posts
Skin & cosmetic
Moderate
ghk-cu
The one peptide with respectable human data behind it — all of which was generated by putting it on skin, not into it.
Skin & cosmetic
Moderate
matrixyl
A workhorse cosmetic peptide that does something modest and measurable, which in this field counts as a strong record.
Skin & cosmetic
Limited
argireline
Marketed as topical botulinum toxin, which is a comparison the underlying pharmacology does not really support.