BHA vs AHA: Understanding the Difference for Healthy Skin
Chemical exfoliants have revolutionized skincare, offering targeted solutions for various skin concerns. Acne scars naturally in just a few weeks can be possible with the [...]
Read MoreBHA vs AHA: Understanding the Difference for Healthy Skin
Medically reviewed by Alan Lucks | MD, Alan Lucks MDPC Private Practice - New York on January 28th, 2026.
Key Takeaways
BHAs and AHAs are chemical exfoliants with unique skin benefits
Salicylic acid is the most common BHA, targeting oily and acne-prone skin
AHAs like glycolic and lactic acid work best for texture and anti-aging concerns
Both can be used together for comprehensive skincare improvements
Chemical exfoliants have revolutionized skincare, offering targeted solutions for various skin concerns. Acne scars naturally in just a few weeks can be possible with the right approach. Understanding the difference between Beta Hydroxy Acids (BHAs) and Alpha Hydroxy Acids (AHAs) can help you create a more effective skincare routine tailored to your specific needs.
What Are BHAs?
Beta Hydroxy Acids are oil-soluble exfoliants that penetrate deeper into the skin. Salicylic acid is the most well-known BHA, derived from willow bark. These acids are particularly effective for treating chest acne and managing oily skin conditions. Their unique molecular structure allows them to break through lipid layers, reaching deeper into pores and dissolving excess sebum.
Benefits of BHAs
BHAs excel at addressing specific skin concerns. They are particularly effective at:
Controlling excess oil production
Preventing and treating blackheads
Reducing inflammation
Minimizing the appearance of pores
Treating fungal acne and other skin blemishes
Understanding AHAs
Alpha Hydroxy Acids are water-soluble exfoliants typically derived from natural sources. Common AHAs include glycolic acid from sugarcane, lactic acid from milk, and mandelic acid from bitter almonds. These acids work primarily on the skin's surface, offering gentler exfoliation compared to BHAs.
Benefits of AHAs
AHAs are renowned for their skin-renewing properties:
Improving overall skin texture
Reducing fine lines and wrinkles
Evening out skin tone
Addressing hyperpigmentation
Helping fade acne scars and age spots
Choosing Between BHA and AHA
Skin Concern |
Recommended Acid |
Primary Benefits |
|---|---|---|
Oily Skin |
BHA (Salicylic Acid) |
Reduces oil, clears pores |
Aging Skin |
AHA (Glycolic/Lactic Acid) |
Improves texture, reduces wrinkles |
Combination Concerns |
Mixed Approach |
Addresses multiple skin issues |
When to Use BHAs vs AHAs
Most skincare experts recommend starting with a single type of acid and gradually introducing the other. For those with complex skin concerns, combining both can provide comprehensive treatment. Tea tree oil uses and benefits can also complement chemical exfoliation for additional skin support.
Frequently Asked Questions
Start with once a week and gradually increase to 2-3 times weekly, depending on your skin's tolerance.
Yes, but introduce them slowly and watch for skin irritation. Some products combine both acids for convenience.
Start with lower concentrations and patch test before full application. Consult a dermatologist if you have concerns.
Absolutely. These acids can increase skin sensitivity to sun damage, so daily SPF is crucial.
Prescription acne medication combined with chemical exfoliants can be highly effective for managing acne.
The Bottom Line
Understanding the nuanced differences between BHAs and AHAs can transform your skincare routine. Everyone's skin is unique, so what works for one person might not work for another. Ready to meet your AI doctor? Get started with Doctronic today.