CHAMGAP
APPROVEDReviewed and approved by the Chamgap Editorial Team (2026-07-17). The draft was written by AI, the existence of all 2 cited sources was verified at the original page, and the verdict passed blind grading and adversarial audit. Methodology v0.6.
Verdict No. 418 · Search date 2026-07-17 · Methodology v0.6

ReSeringe Hydrangea serrata leaf extract,
does it really help with Reduced body fat and abdominal fat?

30-Second Summary
C
Evidence Grade C · 54 · Safety caution
The 600 mg specification has a short-term body-composition signal, not durable weight-loss evidence
What the
research shows
A standardized hot-water Hydrangea extract linked to ReSeringe at 600 mg/day reduced body weight, body fat, and CT visceral and total abdominal fat in a 12-week RCT. The trial randomized 120 participants, 100 completed it, and 93 were analyzed per protocol. As one developer-product trial without long-term independent replication, it supports C with 54 points.
What the
ads claim
Marketing combines body-fat, skin-hydration, and ultraviolet skin-protection functions into a one-pill inner-beauty diet. The 600 mg weight trial, the 300-600 mg skin-function range, and ordinary hydrangea powder or tea are not interchangeable.
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Useful facts when choosing a product

  • The Korean individually recognized ingredient number is 2020-7, and products in the 300-600 mg/day range are distributed depending on body-fat and skin functions.
  • The pivotal body-fat RCT used 600 mg/day of the standardized hot-water extract.
  • Korean finished products including Skinny Lab Hydrangea ReSeringe Diet and CJ ReSeringe products may also contain niacin, pantothenic acid, or other ingredients.
  • One case each of menstrual pain and stomach pain was judged possibly related to the test food. Caution is advised for infants, children, pregnancy, lactation, and allergic conditions.
Gap Measurement · Verdict 418 · C 54
What advertising claims
What independent, higher-quality research supports
△ GAP
01

What the research actually shows

The Han 2022 trial randomized 120 adults with BMI from 25 to under 32, 100 completed it, and 93 met the adherence threshold for per-protocol analysis. Compared with placebo, 600 mg/day for 12 weeks reduced weight, BMI, DEXA fat mass (p=.0049), body-fat percentage, hip circumference, CT visceral fat, total abdominal fat, and the visceral-to-subcutaneous ratio. Waist circumference, subcutaneous fat area, blood lipids, and some other outcomes were not significant between groups. The study received Korean agricultural funding, involved authors from the COSMAXBIO development department, and had no identified independent replication.

02

Why this is classified as C (54)

DEXA fat mass (p=.0049) and CT outcomes were positive, but this was a 12-week trial with 120 randomized, 100 completing, and 93 analyzed per protocol; one proprietary product, developer involvement, selected null outcomes, and no independent replication support C with 54 points.

Counterpoint. A short-term body-fat and visceral-fat signal remains for a matching 600 mg/day specification. This does not establish durable loss, obesity treatment, or effects from other hydrangea ingredients.

Rejudgment record. New verdict — Positive DEXA fat-mass (p=.0049) and CT visceral-fat outcomes in a 12-week trial with 120 randomized, 100 completing, and 93 analyzed per protocol, but one proprietary ingredient, developer involvement, selected null outcomes, and no independent replication

Cross-check — Codex and Claude

This verdict was drafted by Codex through literature review and source-existence checks, cross-checked through blind grading and adversarial audit, and settled by reapplying the methodology boundary rules. Cases with split grades were resolved through rejudgment.
03

Evidence Table

StudyDesignSampleFundingEndpointResultWeight
Han HS et al. 2022Randomized double-blind placebo-controlled trial93Korean MAFRA/IPET support; participation by COSMAXBIO development authorsWeight, BMI, fat mass, and CT abdominal fatThe between-group p value for DEXA fat mass was .0049, and visceral and total abdominal fat decreased; waist circumference, subcutaneous fat, and selected other outcomes were not significant between groups.Key
MFDS individually recognized ingredient 2020-7Regulatory ingredient informationNot applicableBody-fat and skin-function specificationHydrangea hot-water extract is marketed under a 300-600 mg/day range for recognized body-fat and skin functions.Product information
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Receipt — 2 References

All 2 cited sources were verified for existence at the original page (as of 2026-07-17).

Han HS, Chung KS, Shin YK, Yu JS, Kang SH, Lee SH, Lee KT. Effect of Standardized Hydrangea serrata (Thunb.) Ser. Leaves Extract on Body Weight and Body Fat Reduction in Overweight or Obese Humans: A Randomized Double-Blind Placebo-Controlled Study. Nutrients. 2022;14(1):208. PMID: 35011083. DOI: 10.3390/nu14010208.
checked
Ministry of Food and Drug Safety. Individually recognized Hydrangea serrata leaf hot-water extract, recognition 2020-7. No PMID or DOI.
checked
Draft and rewrite: Codex (AI) · Verification: Codex blind grading and adversarial audit · Final adjudication: Claude
Reviewed and approved: Chamgap Editorial Team · Approval date: 2026-07-17 · Corrections: none

Cite this verdict

ReSeringe Hydrangea serrata leaf extract x reduced body fat and abdominal fat Evidence Grade C card
[Chamgap] ReSeringe Hydrangea serrata leaf extract x reduced body fat and abdominal fat — Evidence Grade C·54. 2 cited sources checked. Source: https://chamgap.com/en/verdicts/weight/reseringe-hydrangea-serrata-body-abdominal-fat/ · CC BY 4.0

CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.

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What this document does and does not do

Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.