
When it comes to skincare, there are certain ingredients that have become staples in the industry because of their versatility and effectiveness. Alpha-hydroxy acids (AHA’s) and beta-hydroxy acids (BHA’s) are two such ingredients. These acids have become popular because of their ability to improve a range of skin concerns, from hyperpigmentation to wrinkles and dullness.
AHA’s and BHA’s have distinct properties, but when they’re combined in certain products—especially serums—they offer unique and powerful benefits.
We need to understand what we spend our money on, so let’s explore what sets AHA’s and BHA’s apart, how they work on the skin, and the advantages of using them in tandem.
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Both AHAs and BHAs are chemical exfoliants. They help shed the outer layers of dead skin cells, which promotes new cell growth. However, they differ in the way they interact with the skin.
AHAs are water-soluble acids derived from natural sources. Some examples include glycolic acid which comes from sugar cane, lactic acid which comes from milk, and citric acid which is derived from citrus fruits. Since AHAs are water-soluble, they primarily work on the skin’s surface to dissolve dead skin cells. AHAs improve skin texture, reduce fine lines, and encourage hydration. These benefits are particularly beneficial for dry or sun-damaged skin.
BHAs are fat-soluble, meaning they dissolve in oil. They work to clear pores and minimize blackheads. Salicylic acid is the most common BHA. It’s known for its ability to work within pores to dissolve sebum and prevent clogging. Because BHAs are fat-soluble, they’re best suited for oily and problematic skin types.
Using AHAs and BHAs together can address multiple skin concerns simultaneously. When a high-quality skincare product combines these acids, it can provide comprehensive exfoliation, target different layers of the skin, and treat various issues at once. Here are some of the primary benefits of using products, such as serums, that contain both AHAs and BHAs:
Here are some of the primary benefits:
Since AHAs work on the surface of the skin, while BHAs work on the oils within, the combination provides a dual-action exfoliation that leaves the skin thoroughly refreshed from the surface to the pores.
Using both AHAs and BHAs means you can address concerns related to texture, pigmentation, and clogged pores all at once. AHAs improve texture and glow, while BHAs improve clogged pores.
The acidic nature of both AHAs and BHAs helps lower the skin’s pH temporarily, which supports the active penetration of other active ingredients. This maximizes the efficiency of additional ingredients like niacinamide, vitamin C, or hyaluronic acid.
Combining lower concentrations of AHAs and BHAs in a single product allows for a gentler approach to exfoliation, rather than using high concentration of a single acid on its own.
My favorite serum, Celavive Resurfacing Serum, combines these acids for comprehensive exfoliation, targeting different layers of the skin, and treat some of my various issues at once.
Serums are one of the best delivery mechanisms for combining AHAs and BHAs. Their lightweight consistency allows for even distribution and quick absorption of the active ingredients. In general, serums are designed to soak into the skin. Moisturizers on the hand, sit on the surface of the skin and lock in hydration.
Additionally, since serums are usually applied after cleansing and before other steps in your skincare routine, they can create an effective base for the other products and moisture that your skincare regimen involves. This is one of the ways that high-quality serums enhance the overall effectiveness of your skincare routine.
My favorite AHA/BHA serum provides a balanced, multi-functional approach to skincare, making it simple and easy for me to brighten, smooth, or clear my skin making it a great investment in my aging skin.


*Adapted from Ask The Scientist (.com)
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