AHA + BHA
AHA + BHA — a combination of alpha-hydroxy acids, which are water-soluble surface exfoliants, with beta-hydroxy acid, which is oil-soluble and works inside pores. Used together, they address both surface texture and dullness as well as deeper pore congestion. This pairing offers comprehensive exfoliation but can increase the risk of irritation if overused.
Key points
- AHAs such as glycolic and lactic acid exfoliate the skin's surface to improve the look of texture and radiance.
- BHA, most commonly salicylic acid, penetrates oil to clear pore-clogging debris.
- Combining the two provides both surface and pore-level exfoliation in one routine.
- Because both are exfoliating acids, overuse can lead to dryness, redness, or barrier stress.
- Daily broad-spectrum sunscreen is especially important when using exfoliating acids.
Frequently asked
Can you use AHA and BHA together?
Yes, many exfoliating products combine AHA and BHA to target both surface texture and pore congestion. Start slowly and monitor for signs of irritation, since layering multiple acids can be more drying.
How often should I use an AHA and BHA combination?
Frequency depends on your skin's tolerance, but many people start with a few times per week rather than daily. If you notice tightness, flaking, or stinging, reduce use and prioritize hydration.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
