#Cosmetics

A new study has found that more than half of the beauty and personal-care products used by Black and Latina women in Los Angeles contain formaldehyde or formaldehyde-releasing chemicals, highlighting a worrying connection between daily grooming habits and exposure to cancer-causing substances. Published on May 8, 2025 in Environmental Science & Technology Letters, the study has reignited calls from health experts and advocacy groups for tighter regulation of cosmetic ingredients and greater transparency for consumers—concerns that resonate far beyond the United States, including in Thailand’s rapidly growing beauty industry.

In the vast herbal apothecary of Thai tradition, few remedies inspire as much fascination—and caution—as “กลอย” (Kloi), known in science as Dioscorea hispida Dennst. Revered by generations for its potent medicinal properties, yet infamous for its toxic nature, Kloi epitomizes the delicate balance between healing and harm inherent in many of nature’s gifts. This enigmatic tuber, found lurking beneath the forest floor across Southeast Asia, has sustained communities during times of hardship, but also demands deep cultural respect and wisdom in its preparation. Today, modern science is peeling back the layers of mystery surrounding Kloi, revealing how ancient detoxification rituals have a foundation in chemistry and pharmacology, while new applications in medicine and cosmetics beckon—but not without important warnings.