BHA and BHT: Their Health and Environmental Impacts
Introduction to BHA and BHT in Perfumery
For perfumers and DIY enthusiasts, understanding the ingredients in your formulations is crucial. Butylated Hydroxyanisole (BHA) and Butylated Hydroxytoluene (BHT) are synthetic preservatives widely used in personal care products, including perfumes. While they effectively extend shelf life by preventing oxidation, their potential health and environmental impacts warrant careful consideration.
What are BHA and BHT?
BHA and BHT are synthetic antioxidants used to preserve fats and oils in cosmetics, ensuring products remain fresh and stable. These preservatives are commonly found in perfumes, where they prevent the fragrance from deteriorating over time. However, despite their effectiveness, concerns have been raised about their safety.
Health Concerns with BHA and BHT
Studies suggest that BHA and BHT may pose health risks. BHA has been classified as a possible human carcinogen by the International Agency for Research on Cancer (IARC), and both compounds have been linked to potential endocrine disruption, which can interfere with hormone function. Additionally, BHT may cause skin irritation and has been associated with liver and kidney issues in animal studies.
Environmental Impact of BHA and BHT
Beyond individual health concerns, BHA and BHT are also problematic for the environment. Both are bio-accumulative, meaning they build up in the environment and wildlife, potentially disrupting ecosystems. BHT, in particular, has been found to be toxic to aquatic organisms, raising concerns about its environmental persistence.
Alternatives to BHA and BHT
For perfumers looking to avoid synthetic preservatives like BHA and BHT, there are natural alternatives available. Ingredients such as Vitamin E (tocopherol), rosemary extract, and grapefruit seed extract offer antioxidant properties that can help preserve your products while aligning with a more natural and eco-friendly approach.
Avoid BHA and BHT by Making Your Own Perfume
Understanding the role of BHA and BHT in perfumery allows artisans to make informed choices about their ingredients. While these synthetic antioxidants are effective preservatives, their potential health and environmental risks suggest that exploring natural alternatives may be a better choice for those committed to crafting safer, more sustainable products.
Making your own perfume and body products is easy. Visit our Perfumer's Guide to Pure Perfumers Alcohol page to learn how to make your own homemade perfume and body products using all-natural, sustainable ingredients, including 200 proof Perfumers Alcohol by Culinary Solvent.
