01
RANDOMIZED CONTROLLED TRIALPUBLISHED 2025⚠ 8-WEEK DURATION IS RELATIVELY SHORT; LONGER-TERM EFFECTS UNKNOWN.
Oral collagen peptides improved skin elasticity and moisture over 8 weeks.
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SUPPLEMENTS
• MIXED
Collagen for Skin Tightening
RESEARCH
- Oral collagen improved elasticity
- Device-based treatments dominate research
- Takes 8+ weeks minimum
- Limited direct supplement studies
COMMUNITY
- Real results reported
- Skepticism about science
- Works for some people
- Placebo debate
⚠
SAFETYGenerally safe for healthy adults; those with shellfish or fish allergies should check ingredient sources, as many collagen supplements derive from marine sources.
WHAT THE RESEARCH SAYS
ALL 14 ON PUBMED ↗BASED ON 14 PUBMED STUDIES
02
CASE REPORTPUBLISHED 2023⚠ CASE SERIES WITHOUT CONTROL GROUP; NO PLACEBO COMPARISON AND EFFECTS NOT INDEPENDENTLY VERIFIED.
Injected calcium hydroxylapatite stimulates collagen and elastin production for skin tightening.
03
OBSERVATIONAL STUDYPUBLISHED 2017⚠ SMALL SAMPLE SIZE (20 SUBJECTS); NO PLACEBO CONTROL GROUP.
Diluted calcium hydroxylapatite increased dermal collagen and elastin in neck and décolletage skin.
WHAT PEOPLE SAY
READ THREADS ON REDDIT ↗COMMUNITY SENTIMENT
50% positive
“I’m 40 and I am on collagen for my face. My partner is on collagen for his bad knee. It works really well for both of us. For my partner he experiences a lot less pain if not none when on it. Bad weather doesn’t creep up on him knee either. For my face I can say it works well too. My jowls and cheeks started sagging. It’s lifted again and people keep telling me I look 25. Even though I am definitely not…”
U/NOTICEGLASS ↗“Me too! They’ve definitely decreased my fine lines over the last few months. Bonus points for making my hands look less wrinkly and dry too lol.”
U/KETAQUEENX ↗“This 👆🏼. Outside a placebo effect, there is no consistent science to back up supplementing with any form of collagen. Now, let’s just let that FACT slide and focus on common sense … which you can apply to pretty much any product in the supplement space. Do y’all think you’ve been let in on some secret sauce that no one else knows about? I’ll give you the placebo effect, but to argue REAL metabolic benefits, don’t you think if it worked at all, EVERYONE would be using it, and the pharma companies would be pumping out their “proprietary” form? It’s marketing folks. That’s what you are buying.”
U/DETECTION-K9 ↗COMMENTS
Add context that might help others — skin type, conditions like PCOS, what you'd tried before. The more specific, the more useful.
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