HRIPT is commonly used for new product launch, formula changes, sensitive-skin related products, leave-on products, and buyer audit documentation. Through repeated patch contact and observation records, it supports product safety assessment but does not replace formula compliance review, label review, or other necessary tests.
Items to Confirm in the Study Plan
| Item | Review Focus |
|---|---|
| Sample and formula | Confirm product name, batch, formula version, use method, and leave-on or rinse-off attribute. |
| Study design | Define induction phase, rest phase, challenge phase, contact condition, observation points, and scoring method. |
| Participant management | Confirm inclusion/exclusion criteria, informed consent, process records, withdrawal rules, and abnormal-observation handling. |
| Result recording | Record erythema, edema, dryness, itching sensation, delayed reaction, and other observable changes. |
| Report use | Separate R&D screening, filing support, buyer audit, platform documents, and risk review. |
Report Boundary
An HRIPT report should match the tested sample, study design, participant condition, and observation period. Formula, fragrance, preservative system, use method, target-user group, or production batch changes may require further review.
Green Ark Recommendation
Green Ark (Shenzhen) Certification Co., Ltd. recommends preparing basic safety documents before HRIPT, including ingredient compliance, microbiology, heavy metals, restricted-substance screening, and label-claim review. For cross-border sales, target-market requirements for safety documents and claim support should be confirmed together.
