My favorite are alpha hydroxy acids. They are common in cosmetology now. At the beginning a little bit of history ... AHAs have been used since ancient times, when it was valued smooth, clear and supple skin. Egyptians bathed in sour milk and citrus used to rub face, not knowing that the use of lactic acid activity and citric acids belonging to the AHA. However, in India, women were willing to sacrifice even more because urine mixed with pumice, and then impose the mixture on your face. In the Renaissance, lemon juice mixed with white sugar and mustard with grated apple and bitter almonds as a mask on your hands. Officially, was first used in 1882 AHA (salicylic acid, resorcinol, phenol and TCA). In the 90s became ogólnodostępnie acids in cosmetic formulations. Hydroxy acids are substances belonging to chemical exfoliants, or skin exfoliating agents. They have a wide spectrum of activities including regulate cell renewal, increase the effectiveness of other cosmetic products, improve the production of collagen and elastin, anti-bacterial function, help in removing stains and shallow acne scars and fine lines. This is the most important feature of AHAs. Alpha hydroxy acids (AHAs) are obtained from the products are naturally occurring in nature, including from sugar cane, milk and fruit. They can also be synthesized by chemical methods. Meet AHAs: Lactic acid (alpha-hydroxypropionic acid), which is produced by fermentation of lactose and other sugars carried out by lactic acid bacteria. Occurs naturally in fermented milk, buttermilk, yogurt and fermented vegetables and fruits. Lactic acid is used in the purification of the face, because it works exfoliating, disinfecting and inhibits bacterial growth. In addition, moisturizes the skin and stabilizes the NMF and improves collagen structure. Glycolic acid (hydroxyacetic acid) is derived from sugar cane, but is also found in gooseberries, grapes and apples. This acid has a small molecule, so it penetrates the stratum corneum. Its spectrum of activity is quite broad: it inhibits the activity of enzymes whose job is to maintain consistency between the corneocytes, causing loosening and breaking bonds phones, stimulates cell renewal, increases collagen synthesis and lightens discolorations. Because of the strong effect can occur in numerous side effects as erythema, burning, or blistering, and at the highest concentration (70%) can cause necrosis of the epidermis! Malic acid (hydroksyetanodikarboksylowy) - is present in many fruits, especially apples. Malic acid is more applicable than in the home care of cabinet compared to the other AHA. Maleic acid (hydroksyetanodikarboksylowy) - is present in apples. Most present in preparations containing more types of AHA. Citric acid (2-hydroxypropane-1,2,3-tricarboxylic acid) - is present in fruits such as lemons and other citrus fruits, pineapple, as well as in the wine, beet juice and milk. It has characteristics typical of the AHA. Most commonly used as a bleaching component peels due to the strong brightening. Tartaric acid (dihydroxysuccinic) - is present in grapes and wine. An interesting fact is that more than 2000 years ago was widely known in cosmetics. Egyptian women used compresses with bread soaked in wine. Similarly, took care of their skin lady royal courts. Today, because of its low power partly lost its importance. Mandelic acid - is naturally obtained by the hydrolysis of bitter almonds. It is also found in cherries. Exhibits properties very similar to glycolic acid, but the particle is greater., And therefore operates more smoothly and more slowly. This makes it completely free of irritation. With all of the alpha-hydroxy acid has the strongest antibacterial properties, since the construction is similar to many antibiotics. Inhibits sebum and gently exfoliates the skin. It can be used practically in every especially problematic in the case of cerium: mixed, sensitive, vascular and seborrhoea. Most commonly used is 50% mandelic acid, due to the progressive exfoliation after treatment, non-limiting patient with daily activities. The big advantage of this acid is that it can be used in the summer, because it does not cause hypersensitivity to UV rays. Personally, I am afraid of such a high concentration, and already at 20% I use always deactivator to lessen the risk of irritation. AHAs acids soluble in water, therefore a small degree penetrate the layer of sebum and thus less penetrate into the skin. This is a very important feature - less irritating to the skin. AHAs are soluble in water are recommended for dry, rough or after tanning. At higher concentrations are also helpful for acne, but it can be highly irritating, because they also have an impact on the dermis. Due to the stronger effect of high concentrations of the acid should only be use in dermatological or konsulacji with a dermatologist. In my products offer a blend of AHAs with as many as five fruit! Blueberry, sugar cane, maple syrup, orange and lemon. The blend has a high terapéutica Index, which means that at higher concentration have a relatively low potential irritant. The acids are effective at a pH between 3 and 4.5. Remember that after treatment with AHAs creams applied to the skin with powerful UV filter. Are you used AHAs already? Are you satisfied with their performance? Would You like to check them? https://etsy/shop/elaelcare
Posted on: Tue, 23 Dec 2014 21:06:04 +0000
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