What is bha

AHAs are water-soluble acids made from sugary fruits. They help peel away the surface of your skin so that new, more evenly pigmented skin cells may generate and take their place. On the other hand, BHAs are oil-soluble. You may need to gradually work up to daily use to avoid irritating your skin. BHAs, on the other hand, are primarily used for acne and sun damage. These products go deep into your hair follicles to dry out excess oils and dead skin cells to unclog your pores.

Because of these effects, BHAs are most suitable for combination to oily skin. Lower concentrations may be used to help calm sensitive skin.

You may also have more success with BHAs if you wanted to reduce rosacea-related redness. If you want to tackle acne, look to BHAs. All AHAs yield significant exfoliation. Still, the effects and uses can slightly vary between types of acids. Your selected AHA should have a maximum concentration between 10 and 15 percent. Apply new products every other day until your skin gets used to them. This will also reduce the risk of side effects, such as irritation. No matter which AHA you choose, the strong exfoliating effects make your skin more sensitive to the sun.

Wear sunscreen every morning to prevent burns, age spots, and increased skin cancer risks. Long-term exposure to high doses of BHT is toxic in mice and rats, causing liver, thyroid and kidney problems and affecting lung function and blood coagulation [4]. BHT can act as a tumour promoter in certain situations [5]. Limited evidence suggests that high doses of BHT may mimic estrogen [6], the primary female sex hormone, and prevent expression of male sex hormones [7], resulting in adverse reproductive affects.

Under the Convention for the Protection of the Marine Environment of the North-East Atlantic, BHA is listed as a chemical of potential concern, noting its toxicity to aquatic organisms and potential to bioaccumulate [8].

BHA exfoliants can make a huge difference to how your skin looks and feels. They are powerful enough to deal with skin problems such as milia yet soothing enough for sensitive, rosacea-prone skin.

The pH value of a BHA exfoliant is very important. Salicylic acid works best at a pH value of between 3 and 4. Products outside this range will be less effective or may not work at all.

The word exfoliation is usually associated with facial or body scrubs. Most scrubs, however, are too abrasive and can damage the skin. Rest assured, BHAs are nothing like a scrub. For deeper cleansing, a mild scrub gently applied with a washcloth or soft-bristled cleansing brush can be an option. However, this will not unclog your pores or reveal radiant, smooth skin in the same way that a BHA exfoliant does.

Although some people use both, it is perfectly fine to just use one. BHA is best if you suffer from:. Paula's Choice has a BHA exfoliant for every skin type and concern, and also a number of exfoliants for the skin on your body. Regardless of which exfoliant you choose, it is important that you use it after cleansing and toning. Over time, oxygen in the air attacks the bond, which can transform the fat into a variety of chemicals, many of which smell foul and can be toxic.

Enter the antioxidants. When fatty or oily foods are treated with BHA, or its chemical cousin BHT butylated hydroxytoluene , the preservatives occupy the attention of attacking oxygen molecules in a process chemists refer to as "scavenging free radicals.

But there's more to BHA than fat protection. At high doses, it causes cancer in rats, mice and hamsters, but it does this exclusively in the forestomach, an organ that humans don't have. In the low levels used in food preservatives, however, many researchers consider it perfectly safe, especially given our lack of forestomachs.