Differences Between AHA and BHA Products

AHAs and BHAs are both exfoliants, but they operate at different depths, so they don't have the same effects. Both ingredients are hydroxy acids: organic compounds used for achieving a smooth, unblemished complexion.

Alpha hydroxy acids are water-soluble and operate at the skin's surface. They smooth away roughness and sun damage while stimulating collagen production. Because they exfoliate the outermost layer of the epidermis, they're the perfect solution to dry or rough skin.

AHAs, like glycolic acid and lactic acid, are powerful acids derived from milk or fruit. They're a gentle addition to your skincare routine, helping achieve radiance by removing the connections between dead skin cells in the outermost layer of the dermis. This allows them to shed, revealing only the radiant cells underneath. The result? Dewy, moisturised skin.

Beta hydroxy acids are oil-soluble and operate inside the pores. They take exfoliation to new depths by penetrating the skin surface to unplug pores and prevent blemishes. They unbind dead skin cells far below the surface, reducing the odds of whiteheads and blackheads. Salicylic acid is the preferred BHA. It dissolves sebum, which allows it to penetrate deeper into the pores for a more purifying effect.If you're acne-prone, this is how you can address it. In time, you should notice a softer, smoother complexion.

Alpha-hydroxy acids loosen free dead skin cells, allowing them to shed. This encourages cell turnover and casts off hyperpigmentation, boosting your body's natural collagen production. In time, you'll notice plumper, more line-free skin. Thanks to their powerful humectant qualities, they give your complexion the vibrant brightness of young, dewy cells.

BHAs dissolve in oil, a characteristic that allows them to pass through sebum and sink deeper into the pores. The deep exfoliation they achieve offers several important benefits. It stimulates cell turnover, removing hyperpigmentation one sloughed cell at a time. This has the happy side effect of stimulating collagen production, thereby removing fine lines while boosting brightness. BHAs' smoothing properties remove rough patches and restore the softness of your youth, but they can be drying. Choose a cream formula and moisturising mask to boost hydration.

Beyond their obvious differences in solubility, there are several important differences between these two acids.

AHAs and BHAs are both chemical exfoliants. Unlike mechanical exfoliation methods like scrubs, chemical exfoliation dissolves cell bonds without the risk of abrasive damage.

AHAs and BHAs are a match made in heaven. Together, they target the dermal surface and deeper layers simultaneously, so they're often incorporated into a single regimen to combat redness, pimples, and fine lines. Using these two important hydroxy acids in layers isn't recommended, though. You can avoid excess exfoliation and irritation by applying AHAs at night and BHAs in the morning.

Even if you're actively trying to boost your hydroxy acid exposure, the same basic routine is recommended. You should cleanse, tone, treat, and moisturise twice a day. Use masks and exfoliators one to two times a week, but never use AHAs and BHAs morning, noon, and night. Try to break them up.

Caudalie offers two exfoliating routines:

• The Vinoperfect collection is an AHA-based product line to correct stubborn hyperpigmentation (sun, acne scars, melasma, age). We love the health-giving effects of our dark spot correctors combined with the Vinoperfect Glycolic Peel Mask and Vinoperfect Brightening Micropeel foam. Use your peel mask after your cleanser and BHA exfoliating toner. Each formula takes its magic from natural AHAs from vine sap extract. The Brightening Micropeel foam harnesses the brightening qualities of mandelic acid and fruit acids. 81% of our clinical study volunteers noticed a new skin effect within just 30 seconds.

• The Vinopure collection harnesses the power of BHAs in its serum. The collection includes an acne-prone skincare product that leverages the brightening benefits of Salicylic Acid Serum. You can enjoy the benefits of hydroxy acids by using both routines simultaneously.

Alpha hydroxy acids:

• Pay close attention to your skin's dryness. Start with low concentrations to give your dermis a chance to adjust.

• You might notice peeling, particularly if you use AHAs with retinol and vitamin C. We suggest choosing between them so they don't disrupt your skin barrier.

• If you develop irritation, stop using your alpha hydroxy acids and focus on a gentler hydration routine for a while. If you have sensitive skin, stick to AHA concentrations of 5 to 7%.

Beta hydroxy acids

• They can increase sun sensitivity by removing the epidermis's outermost layer. It's imperative to use them with sunscreen.

• They might worsen acne temporarily before you see improvement. This is just a sign that your pores are clearing.

• If you have sensitive skin, stick to 1 to 2% BHA concentrations.