Glycolic Acid vs Salicylic Acid
Glycolic Acid (AHA)vsSalicylic Acid (BHA)
Glycolic acid is a water-soluble AHA that exfoliates the skin surface, while salicylic acid is an oil-soluble BHA that penetrates pores to clear congestion.
Key Differences
| Factor | Glycolic Acid (AHA) | Salicylic Acid (BHA) |
|---|---|---|
| Solubility | Water-soluble, works on skin surface | Oil-soluble, penetrates into pores |
| Best For | Sun damage, hyperpigmentation, fine lines | Acne, blackheads, oily skin |
| Penetration | Exfoliates top layer of skin | Goes deep into pores |
| Skin Type | Normal to dry skin | Oily, acne-prone skin |
| Sun Sensitivity | Increases sun sensitivity significantly | Less photosensitizing |
| Strength Range | 5-30% (professional up to 70%) | 0.5-2% (professional up to 30%) |
Who Should Choose What?
Choose Glycolic Acid (AHA) if you:
- ✓Hyperpigmentation and dark spots
- ✓Anti-aging concerns
- ✓Dry or normal skin
- ✓Want surface exfoliation
- ✓Dull, textured skin
Choose Salicylic Acid (BHA) if you:
- ✓Acne and breakouts
- ✓Blackheads and clogged pores
- ✓Oily skin
- ✓Large pores
- ✓Sensitive to AHAs
The Verdict
They serve different purposes—glycolic for surface exfoliation and anti-aging, salicylic for pore-clearing and acne. Many people benefit from using both, just not at the same time.