How Do Alpha Hydroxy Acids Work in Skin Care?如何阿尔法羟基酸的工作，在皮肤护理呢？

Alpha hydroxy acids, commonly referred to as AHAs, are effective ingredients that are widely used in cosmetic formulations.阿尔法羟基酸，通常称为ahas ，是有效成分被广泛采用在化妆品配方。 Though found widely in nature, they may also be synthesized in a lab.虽然发现广泛的性质，它们也可以合成在实验室中。

Alpha hydroxy acids are included in skin care preparations for their ability to exfoliate or remove the surface layer of skin cells, allowing healthier skin cells to come to the surface.阿尔法羟基酸是包括在皮肤护理的准备工作，他们的能力，脱落或删除的表层皮肤细胞，让健康的皮肤细胞来表面。 This process can help to improve the way that skin looks and feels.这个过程可以帮助改善的方式，皮肤的外观和感觉。

Alpha hydroxy acids tend to be used in one of two ways:阿尔法羟基酸往往是用两种方法之一：

1. Chemical peels in high concentrations (generally over 20%).化学果皮，在高浓度（一般超过20 ％ ） 。 These are generally performed in an office setting by a qualified professional.这些都是一般的表现是在办公室设置由合资格的专业。
2. At home creams, serums, cleansers etc in concentrations up to 15%.在家里面霜，血清，清洁等，在浓度高达15 ％ 。

Are alpha hydroxy acids effective? 是阿尔法羟基酸有效？

The effectiveness of alpha hydroxy acids has been documented in several studies.的成效， α -羟基酸已被记录在数项研究。 In one study, a 50 percent glycolic acid peel was shown to improve the appearance of sun damaged when applied for four weeks.在一项研究中， 50 ％的乙醇酸剥离结果表明，以改善外观，孙损坏时，申请四周。 Ohter studies have demostrated an improvement in dry skin and, at higher concentrations, skin thickness is increased by improving elastin and collagen production. ohter研究demostrated有所改善，皮肤干燥，并在高浓度，皮肤厚度是增加了改善弹性纤维和胶原蛋白的生产。

Glycolic acid (derived from sugar cane), is the most widely used AHA and has considerable research to support its effectiveness. The downside is that it can be more irritating than other AHAs and may be problematic in darker skin types, where it may lead to hyperpigmentation.乙醇酸（来自甘蔗） ，是使用最广泛的啊哈，并有相当的研究，以支持其有效性。坏处是，它可以更令人恼火了比其他ahas和可能会有问题，在肤色较深的类型，它可能会导致色素沉着。 Other effective alpha hydroxy acids include:其他有效的阿尔法羟基酸包括：

• Lactic acid, derived from milk.乳酸，来自牛奶。 It is milder and tends to be less irritating than glycolic acid, making it ideal for sensitive skin.这是较温和的，而且往往要少刺激性，比乙醇酸，适合敏感性皮肤。
• Citric acid from citrus fruits柠檬酸从柑橘类水果
• Malic acid from apples and pears苹果酸从苹果和梨
• Tartaric acid from grapes酒石酸葡萄
• Mandelic acid from almonds.扁桃酸杏仁。 Mandelic acid is well tolerated and ideal for darker skin types where the risk of hyperpigmentation is very low.扁桃酸是很好的耐受性和理想的肤色较深的类型如色素沉着的风险是很低的。

AHAs are most effective at concentrations above 8%. ahas是最有效的浓度在8 ％以上。 They should be formulated at low ph in order for them to be effective. Lower concentrations (less than 8%) are a good way to gradually introduce an AHA into your regimen, without over sensitizing skin.他们应该制订在低pH值，以便于他们是有效的。低浓度（小于8 ％ ）是一个很好的方式，逐步引入啊哈到您的水情，没有超过敏感的皮肤。

What are the side effects of alpha hydroxy acids? 有什么副作用， α -羟基酸？

Though generally safe, alpha hydroxy acids can irritate some skin types leading to redness or flaking.虽然普遍安全，阿尔法羟基酸可以刺激一些皮肤类型，导致发红或剥落。 They also increase skin’s photosensitivity, making individuals more susceptible to sunburn.他们还增加皮肤的光敏性，使个人更容易晒伤。 For this reason, one should never use an AHA without a minimum of SPF 30 protection.基于这个原因，一应从来不使用一啊哈没有一个最低对SPF 30的保障。

How do you incorporate an AHA into your skin care regimen? 你怎么把一啊哈到您的皮肤护理水情？

Normal and dry skin types benefit most from AHAs.正常及干性肤质类型受惠最多，从ahas 。 Though cleansers and toners will deliver some benefit, you’ll get the best bang for your money by using an AHA cream, serum or lotion which will work by staying in contact with your skin.虽然清洁和碳粉会带来一些好处，您会得到最好的邦为您的钱，用一啊哈霜，血清或洗剂，将工作留在接触你的皮肤。

My top pick is我的首选是 MaMa Lotion妈妈洗剂 , a 20% AHA serum (with 10% mandelic acid and 10% malic acid). ， 20 ％ ，啊哈血清（ 10 ％扁桃酸和10 ％的苹果酸） 。 Studies have shown that MaMa Lotion is effective for:研究表明，妈妈洗剂是有效的：

• Melasma and other hyperpigmentation disorders黄褐斑及其他色素沉着症
• Acne痤疮
• Acne scars痤疮疤痕
• Wrinkles and fine lines皱纹和幼纹
• Rosacea.酒渣鼻。