AHA vs. BHA: What’s the Difference?

When exploring skincare options for smoother, brighter-looking skin, you may come across two popular ingredients: AHA (Alpha Hydroxy Acid) and BHA (Beta Hydroxy Acid). While they sound similar, these exfoliating agents work in different ways and are often used in different skin care routines. Here's a breakdown of how they differ, and how they may support your skin goals.

What is AHA?
Alpha Hydroxy Acids (AHAs) are water-soluble exfoliants often derived from natural sources like sugarcane or milk. They work on the surface of the skin, helping to remove build-up of dead skin cells. This may result in a smoother, more refreshed-looking complexion. AHAs are commonly found in products designed to support skin radiance and a more even appearance.

Common types of AHAs include:

Glycolic Acid
Lactic Acid
Mandelic Acid
AHAs are often used in formulations intended for dry or sun-damaged skin, as they can support hydration and skin renewal.

What is BHA?
Beta Hydroxy Acids (BHAs) are oil-soluble and are commonly used in skincare products formulated for oily or combination skin types. Unlike AHAs, BHAs can reach into pores, helping to dissolve excess oil and surface debris.

The most well-known BHA is Salicylic Acid, which is frequently used in products aimed at refining skin texture and reducing the appearance of congestion.

BHAs are often preferred for those with skin prone to visible pores or excess oil, as they may help promote a clearer, smoother look over time.

Key Differences Between AHA and BHA

Feature AHA (Alpha Hydroxy Acid) BHA (Beta Hydroxy Acid)
Where It Works Works on the skin’s surface Works on the surface and inside pores
Solubility Water-soluble Oil-soluble
Best For Dull, dry, or sun-damaged skin Oily, acne-prone, or congested skin
Skin Benefits Boosts hydration and radiance Refines texture and reduces breakouts
Common Uses Brightening, smoothing treatments Pore-clearing, acne solutions

If you’re unsure which ingredient may suit your skin, or how to use them safely within your skincare routine, we recommend booking a consultation with our qualified team.

Final Thoughts
Both AHA and BHA are widely used in modern skincare for their exfoliating and clarifying benefits. While they don’t treat medical skin conditions, they can be part of a personalised skincare routine designed to support a healthy-looking complexion.

📞 Interested in learning more?
Book your skin consultation today or get in touch with our team to explore tailored skincare advice.

Back to blog