Jennifer Aniston and collagen peptides: what she said—and what to check
Celebrity routines can make an unfamiliar ingredient interesting. The next step is understanding what was actually used—and what research can tell us about it.
In this guide
What was she discussing?
An oral collagen supplement routine. That category is different from a topical peptide serum or a prescription injectable. Her quoted description does not specify a measured improvement, so we do not turn it into a claim about wrinkle reduction, hair growth or weight loss. [1]
What do the studies add?
A 2018 randomized trial studied a specific low-molecular-weight collagen preparation for 12 weeks and reported improvements in skin hydration, wrinkling and elasticity. It did not test Aniston’s personal routine or establish that every collagen powder performs the same way. [2]
Why the evidence is still worth questioning
A 2025 analysis found that favorable results were not present in its high-quality and non-industry-funded subgroups. That is a reason to check the quality of the evidence behind a particular product, rather than treating a celebrity experience as the answer. [3]
Your practical shopping questions
What animal or other source is listed? Are there ingredients you avoid? Is the research about the finished product or a different formulation? What is the ongoing cost? Keep those answers beside the product label and discuss suitability with a health professional before taking a supplement. [4]
A useful takeaway from a celebrity routine
Keep the inspiration; make the decision your own. Define the result you care about, compare the evidence and avoid buying several products at once just because they appear in one person’s routine. Read our beginner guide next if “peptides” still feels like a catch-all term.
Sources & further reading
- Jennifer Aniston’s interview with Harper’s BAZAAR, July 2, 2021
- Kim et al.: randomized oral collagen trial (2018)
- Myung and Park: collagen trials, funding and study quality (2025)
- FDA: dietary supplements explained
Educational information; not a personalized treatment plan. Celebrity references are editorial, not endorsements of Prosper. No independent medical review is claimed.