AHA vs BHA - what is the difference?
Alpha Hydroxy Acids (AHAs) and Beta Hydroxy Acids (BHAs) are popular skincare ingredients with amazing benefits for your skin’s texture, clarity, and glow. But while they’re both effective exfoliants, they each work in different ways, making one better suited for certain skin types or concerns over the other. In this guide, we’ll break down the main differences between AHAs and BHAs, explore how each works, and introduce some top COSRX products that use these ingredients to transform your skin.
What is AHA?
AHAs, or Alpha Hydroxy Acids, are water-soluble acids derived from fruits, sugar, and milk. AHAs primarily work on the skin’s surface, gently exfoliating away dead skin cells to reveal a brighter, smoother layer of skin underneath. If you have dry, dull, or sun-damaged skin, AHAs can be especially beneficial as they also help your skin retain moisture, which smooths and softens fine lines and rough patches.
Key Benefits of AHAs:
- Improves skin texture by removing dead skin cells and refining skin’s surface
- Brightens complexion and reduces signs of sun damage like dark spots
- Boosts hydration to support drier, more sensitive skin types
What is BHA?
BHAs, or Beta Hydroxy Acids, like salicylic acid, are oil-soluble and can penetrate deeper into the skin’s layers. This makes them effective for oily, acne-prone, or congested skin as they target excess oil and clear out clogged pores. BHAs are known for their anti-inflammatory and antibacterial properties, making them a great choice for those who struggle with blackheads, whiteheads, and blemishes.
Key Benefits of BHAs:
- Deeply cleans pores to prevent and treat breakouts
- Reduces oil production and congestion, helping with blackheads
- Soothes irritated skin, which is ideal for inflamed, acne-prone skin
AHA vs. BHA: Key Differences and How to Choose
- Water-Soluble vs. Oil-Soluble: AHAs are water-soluble, so they’re ideal for addressing surface-level concerns like dryness and rough texture. BHAs are oil-soluble, allowing them to work deeper in the skin, clearing pores from the inside out.
- Surface vs. Pore-Level Exfoliation: AHAs focus on resurfacing the skin’s outer layer, which makes them great for dry or mature skin. BHAs, however, reach deep into pores, making them highly effective for oily or acne-prone skin.
- Best for Skin Concerns: AHAs are better for dullness, texture, and sun damage, while BHAs are best for acne, blackheads, and congestion.
COSRX Products to Try: Which One is Right for You?
1. AHA/BHA Clarifying Treatment Toner
COSRX’s AHA/BHA Clarifying Treatment Toner is a fantastic option for daily exfoliation, especially for those with sensitive skin or beginners to chemical exfoliants. This toner gently refines the skin, improves texture, and preps it for further treatments. It’s an ideal pick for anyone looking to maintain a balanced complexion and smooth out rough patches without irritation. Plus, it’s gentle enough for daily use!
2. COSRX BHA Blackhead Power Liquid
The COSRX BHA Blackhead Power Liquid is a powerhouse for acne-prone and oily skin. Formulated with 4% betaine salicylate (a milder form of salicylic acid), it dives deep into the pores to reduce blackheads and prevent new breakouts. This BHA treatment is lightweight and designed to control oil while soothing the skin, making it perfect for those struggling with stubborn blackheads or congested pores. Use it a few times a week to keep pores clean and skin looking clear.
3. COSRX AHA 2 BHA 2 Blemish Treatment
The COSRX AHA 2 BHA 2 Blemish Treatment combines the best of both worlds. With 2% AHA and 2% BHA, this treatment is ideal for combination skin types or those dealing with both surface dullness and deep congestion. It exfoliates, brightens, and keeps pores clear, making it an effective solution for improving skin texture and preventing blemishes. If you’re looking to address multiple skin issues, this product delivers targeted action for a smooth, balanced complexion.
Which is Best for Your Skin Type?
Choosing between AHAs and BHAs comes down to understanding your skin’s unique needs. For dry or mature skin, AHA products like COSRX’s AHA/BHA Clarifying Treatment Toner are great for gentle surface exfoliation and added hydration. For oily or acne-prone skin, the COSRX BHA Blackhead Power Liquid is ideal to keep pores clear and prevent breakouts. If you have combination skin or face multiple issues, the COSRX AHA 2 BHA 2 Blemish Treatment combines both acids for a comprehensive solution that tackles roughness, blemishes, and clogged pores.
Final Thoughts
Both AHAs and BHAs are valuable tools for creating smoother, clearer skin. By choosing the right type for your skin’s needs and exploring COSRX’s targeted products, you can achieve the glowing, healthy skin you’ve been looking for. Remember to introduce these products slowly and always follow up with sunscreen, as exfoliating acids can make your skin more sensitive to UV rays.