Polyhydroxy Acids(PHA) - Why You Should Be Looking for Them in Your Skincare Products
There’s no shortage of skincare ingredients on the market, for skincare enthusiasts, there’s nothing 更多的 exciting than trying something new. But for those of us with sensitive skin, it’s always a gamble when we try a new ingredient—will it or won’t it cause irritation? But there’s a new ingredient on the skincare scene—pha—and they’re worth learning about, especially if you have sensitive skin.
pha, or polyhydroxy acids, are a type of 化学剥离素 making a name for themselves. Arguably the most well-known ingredient in skincare, hydroxyacids slough off the top layer of the skin, shedding dead skin cells and boosting new cell turnover to improve skin texture, help even-out skin discoloration, reduce fine lines and wrinkles.
直到最近, the most widely-used 化学剥离素s in skincare 澳门皇冠体育 were AHAs (alpha-hydroxy acids) and BHAs (beta hydroxy acids). pha, 然而, are gaining popularity for their ability to do everything that AHAs and BHAs do, but with one major difference: they don’t cause as much irritation as their 更多的 famous counterparts. This makes them excellent for ALL types of skin, especially Sensitive skin.
What’s the difference between AHAs, BHAs, pha?
AHAs and pha are both water-soluble, making them ideal for gently 剥去表层 of the skin and in turn revealing a brighter, clearer complexion. 事实上, there’s very little difference in the chemical makeup between pha and AHAs; the only one being that the molecules of pha are much larger. This means they are absorbed 更多的 slowly and don't penetrate as deeply, so they cause less irritation.
bha是油溶性的, which makes them a good skincare ingredient for acne since they can cut through oil and buildup to fight cystic acne and clear out clogged pores. pha aren’t as powerful as BHAs, but that doesn’t mean they can’t be used to fight breakouts and help congested skin. For those who suffer from light to moderate acne, pha can work wonders for pesky little pimples, 白头粉刺, any of the superficial skin discoloration and uneven texture that they may cause.
pha的好处
Poly-Hydroxyacids are unique in that besides being a 化学剥离素, they also function as a humectant. Common humectants are hyaluronic acid, 聚麸胺酸, 芦荟精华素, 和甘油, they’re known for their ability to hydrate and bind water to the skin to help restore elasticity and fill in fine lines. This means that pha simultaneously exfoliate while moisturizing and plumping the skin, 保持柔软, smooth for an overall healthy glow. One study has even shown that pha are gentle enough to help rosacea!
Thanks to their humectant properties, pha make great additions to hydrating serums and moisturizers. They’re also popular in face cleansers since, 不像aha和bha, they’re gentle enough for everyday use. The most common pha are gluconolactone, 半乳糖, 还有乳酸, they can be combined with other ingredients such as AHAs as they can help offset the irritation.
pha basically give you all of the rewards without the risks. If you’re feeling stuck in a rut with your skin but you’re nervous to incorporate a new ingredient into your skincare routine, give pha a try—you have nothing to lose!
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参考文献
1.Grimes PE, Green BA, Wildnauer RH, Edison BL. The use of polyhydroxy acids (pha) in photoaged skin. 皮肤. 2004 Feb;73(2 Suppl):3-13
