Bht
BHT, or butylated hydroxytoluene, is a synthetic antioxidant commonly used in UK cosmetics and skincare to prevent oils and fats from going rancid. It helps products stay fresh and effective for longer on the shelf and after opening. You’ll often find it in lipsticks, moisturisers, foundations and hair oils.
How it works in skincare
In cosmetics and skincare BHT functions as a highly effective antioxidant that protects the lipid components of formulations from oxidation caused by exposure to air and light. By neutralising free radicals it stops the breakdown of oils, butters and fragrance ingredients, preserving the texture, colour and scent of products over time. It is particularly useful in oil-rich formulas such as lip balms, creams and sunscreens where stability is essential for both performance and safety.
Key benefits
- Extends the shelf life of oil-based skincare and makeup
- Maintains product colour and prevents rancid odours
- Protects delicate botanical oils from oxidation
- Helps keep lipstick and lip balm smooth and stable
- Preserves the efficacy of vitamins in serums and creams
- Allows for safer use of natural oils in hair and body products
Best for
all skin types, sensitive skin, oily skin, acne-prone skin
Where it comes from
BHT is a synthetic compound produced in a laboratory from petroleum-derived raw materials. It does not come from a plant, seed, flower or mineral source.