People aged 12 to 17 taking dried barberry extract had total acne spots fall 45% in 4 weeks in 2012, while placebo changes were not significant. The PubMed-listed Journal of Dietary Supplements trial randomized 25 people to barberry and 24 to placebo.
But the result does not settle what an adult with jawline acne should take before a date photo or Monday video call. The trial was small, short and limited to moderate to severe acne vulgaris, the medical name for common acne.
Total spots fell 45% in 4 weeks
The 2012 trial counted noninflamed spots, inflamed spots, total spots and a Michaelson acne severity score. After 4 weeks, the barberry group fell 43% on noninflamed lesions, 45% on inflamed lesions, 45% on total lesions and 44% on severity.
The placebo group did not have significant similar changes in the public abstract. That placebo comparison is the key detail for anyone staring at the same mirror every morning. Acne often looks different under bathroom light, phone light and office light, so the trial used counted lesions rather than a quick impression.
Take an adult who is trying to tell whether a breakout is moving or just looking different on camera. The useful comparison is the trial’s structure: count inflamed spots, count noninflamed spots, look again after 4 weeks, and discuss the pattern with a dermatologist or pharmacist rather than copying a study treatment.
Inflamed bumps made the change more visible
The skin-side detail is the split between inflamed and noninflamed lesions. Inflamed lesions are the red, raised bumps people often notice first in photos. Noninflamed lesions are clogged-looking spots. The 2012 trial reported declines in both, but the 2014 trial separated them more sharply.
In the 2014 Asian Journal of Clinical Nutrition fruit-juice trial, inflamed and total acne lesions decreased more in the barberry group than placebo. Noninflamed lesions did not differ significantly, with p = 0.33. That matters because redness and swelling can be what makes a breakout feel most visible on a call or date.
Why be careful with the result?
The strongest number came from 25 people in the barberry group and 24 in the placebo group, all aged 12 to 17. The study lasted 4 weeks. The abstract says no notable complication or side effect was reported in relation to barberry.
That safety sentence is reassuring but narrow. A 25-person treatment group cannot answer every question about adults, hormonal acne, body acne, pregnancy, sensitive skin, or people already using acne medicines. It also cannot say whether the same 45% total-lesion decline would appear in adults.
The trial also involved moderate to severe acne vulgaris. If your current issue is a few jawline bumps, clogged pores after workouts, or marks left after acne, that is a different situation from the group measured in the 2012 abstract.
The fruit-juice trial repeated part of the pattern
A 2014 Asian Journal of Clinical Nutrition double-blind, placebo-controlled randomized trial enrolled 38 volunteers with mild to moderate acne vulgaris. In that study, 18 were in the barberry group and 20 were in the placebo group for 30 consecutive days.
The second trial did not find a significant difference for noninflamed lesions, with p = 0.33. It did find a greater decrease in inflamed lesions, with p = 0.01, and total lesions, with p = 0.02, in the barberry group than placebo.
The 2014 abstract also says 40 volunteers were recruited, while 38 are described in the completed trial groups. That is another reminder to read the public numbers closely. The result is interesting, but it is still a small short-term acne study, not a broad adult treatment guide.
Every public barberry acne group compared
The public abstracts give 2 placebo-controlled barberry acne trials. They differ in age detail, acne severity, barberry form and which acne lesions improved compared with placebo.
| Source | People measured | Barberry group | Placebo group | Main acne finding |
|---|---|---|---|---|
| Journal of Dietary Supplements, 2012 | People aged 12 to 17 with moderate to severe acne vulgaris | 25 | 24 | Total lesions fell 45% in 4 weeks; placebo changes were not significant |
| Asian Journal of Clinical Nutrition, 2014 | 38 volunteers with mild to moderate acne vulgaris | 18 | 20 | Inflamed and total lesions fell more than placebo; noninflamed lesions did not differ significantly |
What this means for you
If you have adult acne now, treat these barberry results as early evidence, not a plan to copy. Bring the studies to a dermatologist or pharmacist, especially if you already use acne treatments, have sensitive skin, are pregnant, or take regular medication. Ask how any supplement could fit with proven options such as benzoyl peroxide, adapalene, prescription retinoids, hormonal treatment, antibiotics or isotretinoin.