BHT
What is BHT?
BHT, chemically 2,6-di-tert-butyl-4-methylphenol, is a lab-made phenolic compound designed as an antioxidant for industrial and consumer products. In cosmetics, it primarily acts as a stabilizer in emulsions, oils, and fragranced formulas like moisturizers, serums, and foundations. It works by neutralizing free radicals through hydrogen donation, halting oxidative breakdown of lipids, vitamins, and scents that could otherwise lead to discoloration, separation, or off-putting smells. This preservation extends shelf life while keeping formulations consistent in texture and performance. Beyond stabilization, BHT contributes to fragrance blends by refining aroma notes and countering base odors, ensuring a pleasant user experience. Commonly used at trace levels, it supports the integrity of diverse personal care items without impacting skin feel.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Shields ingredients from oxidative damage for longer product freshness.
Enhances fragrance stability and masks unwanted odors.
Non-comedogenic, unlikely to clog pores.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Users of oil-rich creams needing stable formulas. | People with rare BHT sensitivity or allergies. |
| Individuals preferring long-shelf-life products. | Those preferring natural-only preservatives. |
| Those with acne-prone skin due to low pore-clogging potential. | Individuals wary of synthetic antioxidants amid moderate safety ratings. |
Safety Notes
- Deemed safe for cosmetic use by expert review panels.
- Low incidence of irritation in human testing.
Frequently Asked Questions about BHT
What does BHT do in skincare?
It prevents oxidation to keep products stable and fresh.
Is BHT comedogenic?
No, it has a rating of 0 for pore-clogging.
What is BHT's safety rating?
Moderate concern from some databases, safe per cosmetic experts.