my dermatologist said peptides don't penetrate skin is she right

https://www.pinkrimage.com/power-of-peptides-a-scientific-look-at-rejuvenating-your-skin/

peptide absorption skin: What Science Says About Skin Penetration As of April 2024, there’s growing chatter around peptides in skincare, but the question remains persistent: do peptides actually penetrate skin effectively? You’ll come across