In our last article, Is Your Scalp Healthy? – Scalp Health Evaluation Methods (Part I), we have introduced the evaluation methods for dandruff, sebum levels, and itchiness. In this article, we will continue with the evaluation methods for erythema/papules/pustules and the overall hair status.

This article compiles and summarizes the latest developments in cosmetics regulations in China and globally as of September 2025, covering industry news, newly issued regulations, relevant policy adjustments, and regulatory requirements. It aims to assist enterprises in ensuring compliance and keeping up with global cosmetics regulatory trends.

Since the concept of New Approach Methodologies (NAMs) was introduced, various methods including in vitro approaches, Threshold of Toxicological Concern (TTC), and computational models have gained favor among toxicological assessment experts. With the increasing capabilities of computational models, key toxicological endpoints such as acute toxicity, skin/eye irritation, sensitization, chronic toxicity, genotoxicity, carcinogenicity, reproductive and developmental toxicity, and toxicokinetics can now be predicted using QSAR models.