The new acid


Have you heard of PHA?

AHAs and BHAs, do you have skin care products that contain these? A lot of us do, since alpha hydroxy acids (AHAs) and beta hydroxy acids (BHAs) are popular ingredients that offer effective skin exfoliation. But not all skin can tolerate AHAs and BHAs. This is where PHAs, or polyhydroxy acids, can help.

Photo by Greta Hoffman

AHAs, BHAs, and PHAs are acids that act as chemical exfoliants on the skin but with different purposes. AHAs come from fruits like apples or other sources like milk. They gradually remove dead skin cells to reveal fresh skin underneath. AHAs are great for skin texture, tone, hydration, and anti-aging. Glycolic and lactic acid are some examples of AHAs. 

BHAs, on the other hand, are derived from plants. They go deeper into the skin to unclog pores and keep sebum at bay. This is why BHAs are ideal for acne-prone, combination, and oily skin. Salicylic acid is an example of BHA. 

The newest player in the acid game are the PHAs, and the difference is that PHA molecules are the biggest among the three.

Both AHAs and BHAs help with skin dullness and other impurities. The only issue is that they are not suitable for sensitive skin as they can burn the skin or promote sun sensitivity. This is where PHAs can help.

The newest player in the acid game are the PHAs, and the difference is that PHA molecules are the biggest among the three. This means that the molecules cannot penetrate the skin and are therefore suitable for more skin types, unlike AHA and BHA. 

PHA promotes overall radiance and glow as it works as a chemical exfoliant on the surface of the skin. An antioxidant, it can help with UV and free-radical damage. It also prevents the breakdown of collagen and hydrates the skin, making it a great anti-aging ingredient but without the burning feeling or irritation. Among the three, PHA is the only ingredient that can be used daily. Plus, it can enhance the effectiveness of other ingredients as it can work alongside them as well. A common combination of PHAs are with niacinamide or even with AHAs and BHAs! Don’t combine PHA with vitamin C, however, as they will cancel each other out. Common PHAs are gluconolactone and lactobionic acid.

Not all ingredients are free from side effects. As mild as PHA can be, your skin may still react to it especially if it is very sensitive. Test a small area of your skin before you use it on your whole face. Also, try an interval of two to three days before using it more often. It is best to discuss skin products or ingredients with your dermatologist for proper recommendation. Thanks to PHA, healthy and glowing skin is now achievable, no matter your skin type.