September 08, 2026 | Anti-Aging, Skin Care Regimen
Patients ask me about collagen more than almost any other supplement. Here is the honest read.
The Study Everyone Is Quoting
“Oral collagen has real science behind it, in a meta-analysis of 23 randomized controlled trials with almost 1,500 participants. The supplement significantly improved skin hydration, elasticity, and wrinkles. The most common dose was 4 grams per day, with a median of about 3.5 grams per day.”
The Part That Did Not Make the Headlines
“The most interesting thing about this meta-analysis is that it showed only the pharmaceutical-sponsored studies had significant improvement, while the independent studies did not see any change.”
Sort the same 23 trials by who funded them and the benefit is only in the industry-funded half. The authors of that paper conclude there is currently no clinical evidence supporting collagen supplements for preventing or treating skin aging. That belongs in the room alongside the top line.
Collagen Chips, Creamers and Waters
“Two grams of collagen in a bag of chips sits at the bottom of any range that has been studied. And keep in mind that the studies used a daily dose for three months, every single day. A bag of chips is not really recommended as a daily dose, so somebody eating these a few times a week is only getting a fraction of the dose studied to provide results. I think the same goes for the collagen coffee creamers and waters.”
Why It Turns Up in Everything
“I think the reason the collagen ended up in these products is because it has marketing power for beautification, but also it’s flavorless, and it dissolves easily into foods and fluids. It’s an easy additive.”
What I Tell Patients
“In conclusion, collagen is one of the few supplements in aesthetics that actually has some science behind it, and improves hydration, elasticity, and wrinkles. Patients should take 3 to 4 grams per day for at least three months, which puts them in the range that has actually been studied.”
If you are going to take it, take the dose the trials used, every day, for at least three months. It is cheap and it is safe.
It is also not a replacement for the things with a stronger evidence base. Medical-grade skincare, radiofrequency microneedling, chemical peels and, when the anatomy calls for it, facelift surgery do things a powder cannot. My earlier piece on collagen formats covers powders, serums and gummies.
Frank Agullo, MD, FACS, El Paso. Call (915) 590-7900 or text 1-866-814-0038.
