This guideline provides principles and technical guidance for the research of hair dye cosmetics. It specifies the requirements for research on the mechanism of action, quality control, safety, efficacy, and labeling claims to ensure product quality and safety. It applies to cosmetic products intended to change hair color, where the original color cannot be restored by immediate washing.

Contents

I. Preface

II. Scope

III. General Principles

IV. Main Contents

1. Research on Mechanism of Action

2. Research on Quality Controllability

3. Research on Safety

4. Research on Efficacy

5. Labeling Claims