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Polyhydroxy acids (PHAs) are the new and improved cousins of alpha hydroxy acids (AHAs). They work as chemical exfoliants, and are therefore useful in skincare. They work slowly, which makes them fairly mild. People with sensitive skin can use PHAs without any problem.
PHAs remove dead skin cells from the uppermost layers of skin to reveal soft, bright skin. If you have dull, tired-looking skin, PHAs are the right ingredient for you. They also have antioxidants that protect the skin from UV damage, and make the skin’s barrier stronger. PHA protects collagen from breaking down, which keeps your skin looking younger for longer.
They are mild, so they work slowly – which may not be what you want. PHAs are exfoliants, so be careful when you start using them, especially if your skin is sensitive or damaged. Skin that reacts to new products may find PHAs irritating, mild as they are. Pregnant and breastfeeding women, and people with skin infections or open wounds should avoid using PHAs.
Pores are itsy-bitsy openings in the skin—and there are millions covering every millimeter of skin. There are two types of pores with different functions: sweat pores and oil pores. The sweat pore allows moisture, produced by sweat glands, to exude out to the surface of the skin, where it helps to cool the body in response to heat, exertion or fever. Sweat pores are so tiny, they are mostly invisible to the human eye.
The oil pore, on the other hand, is a bit larger. Oil pores are also known as hair follicles because these pores produce oil from the sebaceous glands, but they are also the openings from which hair emerges. The oils help to keep our skin and hair healthy. It is the oil pores that can get clogged with sweat, debris and other gunk, causing acne, blackheads and whiteheads. Sweat pores rarely get clogged, as they are so tiny.
Benzoyl peroxide is a topical agent for fighting bacteria and unclogging pores. It is one of the longest-used medications to keep pores clean and healthy. Jojoba oil and rosehip oil are also good for reducing inflammation, fighting bacteria, and keeping in moisture for healthier skin. Ingredients that help exfoliate dead skin cells and increase new skin cell production, such as Vitamin A/Retinol, glycolic acid, and salicylic acid, are good for keeping pores unclogged as well.
PHA may be effective for clogged pores, but there are many other factors that may affect whether this ingredient would work on your skin or if there are better ingredients that may work for you. Take this skin quiz to find the best ingredients for your skin and build your skincare routine.
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