BHA
Ingredient Info
BHA (butylated hydroxyanisole) is a synthetic antioxidant preservative used in skincare products to prevent oils from oxidizing and going rancid, helping extend shelf life. When applied topically to skin, it has minimal direct benefit compared to its primary role as a stabilizing ingredient.
Benefits
- Preserves product stability and extends shelf life
- Prevents rancidification of oils in formulations
Potential concerns
- Classified as a possible human carcinogen by some regulatory bodies when ingested in food; topical use carries lower risk but remains a concern for some consumers
- May cause contact dermatitis or skin irritation in sensitive individuals
- Endocrine-disrupting potential reported in some studies
Science: Research shows BHA caused stomach tumors in rodents at high doses through chronic irritation rather than direct DNA damage; however, humans lack the forestomach structure where this occurred in animals, reducing direct relevance. Topical application in skincare poses lower systemic exposure than ingestion, but long-term safety data specifically for cosmetic use is limited.
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