Solubility: AHA's are water soluble so they dissolve in water while BHA's are oil soluble so they dissolve in oils which makes them able to push through sebum and sebaceous follicles.Īrea of Action: AHA's work on the top layers of skin, but BHA's work on the skin surface AND inside the pores.Ĭoncentration: AHA's need to be used in concentrations of at least eight percent in order to be effective, whereas BHA's only need a concentration of around 2% Nowdays BHA's can be found in doses asl ow as 0.5%).ĭecreasing oil production: AHA's dont have an effect on sebum. Although the salicin content converts into salicylic acid, it is much weaker ( so it wont give you comparable results for exfoliating or treating acne).Įxfoliating and smoothing, brightening, fades hyperpigmentation, firming skin and reducing wrinkles, hydrating, clearing and preventing mild acne. Salix alba or Willow bark extract: A natural BHA extracted from plants. 4% betaine is said to be equivalent to 2% salicylic acid. It is a gentler alternative to salicylic acid, and according to a study by the manufacturer, is equally effective. However, it is not as irritating as glycolic acid (the strongest AHA) because it has a large molecular size, as well as anti-inflammatory properties.īetaine Salicylate: A BHA derived from sugar beets. The main exfoliants you'll see in skincare products are: BHA's slow down this process, so the cells function longer before they flake off (meaning they're less likely to clog pores). For example a condition like acne is associated with hyperkaratinization-meaning the body is shedding skin cells too fast. This helps to loosen dead skin cells, so they're easily sloughed off.īHA's also work inside the pores, where they not only dissolve keratin plugs, but also help to regulated keratinizatin ( cell turnover and shedding). It also is used as a perservative.īHA - A chemical exfoliator that soften and dissolve keratin, a protein that forms part of this skin structure. It is similar to tartaric acid in that it regulates pH. It's oftern used to stabalize other acids pH levels.Ĭitric Acid - An AHA derived from citrus fruits. Tartaric Acid - An AHA coming from grapes. It wont do enough on its own so its usually combined with stronger AHA's. Malic Acid - A mild AHA derived from apples. Mandelic Acid - A mild AHA derived from bitter almonds. It's a gentler alternative to glycolic acid. Lactic Acid - The seconf most common AHA, derived from milk. It's the strongest becuase of its small molecular size, which makes it the most irritating. Glycolic Acid - The most common AHA, derived from sugarcane. By doing this it makes for an even resurfacing of new skin. AHA otherwise known as Alpha-hydroxy-acid - a type of acid that is derived from sugarcane, milk or fruit.Īs chemical exfoliators, AHA's work by peeling away the dead skin cells on the skins surface, revealing fresh new skin cells underneath.ĪHA's exfoliate the skin by attacking the glue that holds the skin cells together.
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