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| Applications and Properties |
|   | Glycolic Acid | Salicylic Acid |
| Solubility | Water | Oil |
| pH | 0.6 - 1.2 | 2.1 | 2.35 |
| Contact Intensity | High | Low | Medium-High |
| Penetration Depth | Dermis | Epidermis |
| Application Time | 2 - 5 min | 8 - 12 min (4 - 8 min, sensitive skin) | 60 - 90 sec (20 - 60 sec, sensitive skin) |
| Neutralization Agent | Sodium Bicarbonate | Water | Water |
| Risk of Irritation | Low-Moderate | Low |
| Best for | Skin cell regeneration, anti-aging treatments (wrinkles, age spots, sun spots), acne scarring, dead skin buildup | Clogged pores (blackheads, whiteheads), infected pores (papules, pustules, nodules, cysts), enlarged pores, dead skin buildup |
| Good for | Enlarged pores, various keratoses | acne scarring, ingrown hairs |

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Choosing the Appropriate Chemical Treatment for Acne Scarring
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Target Area
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Above the Neckline
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Below the Neckline
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Rate of Infection
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Sustained
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In Regression
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Sustained
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In Regression
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Scarring
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<1mm Deep
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>1mm Deep
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<1mm Deep
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>1mm Deep
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<1mm Deep
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>1mm Deep
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<1mm Deep
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>1mm Deep
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Level I
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Salicylic Acid 8
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Salicylic Acid 15
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Glycolic Acid 30
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Glycolic Acid 30 Unbuffered
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Salicylic Acid 15
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Salicylic Acid 25
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Glycolic Acid 40
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Glycolic Acid 30 Unbuffered
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Level II
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Salicylic Acid 15
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Salicylic Acid 25
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Glycolic Acid 40
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Glycolic Acid 40 Unbuffered
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Salicylic Acid 25
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Salicylic Acid 35
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Glycolic Acid 50
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Glycolic Acid 40 Unbuffered
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Level III
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Salicylic Acid 25
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Salicylic Acid 35
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Glycolic Acid 50
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Glycolic Acid 50 Unbuffered
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Salicylic Acid 35
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Glycolic Acid 50 Unbuffered
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Glycolic Acid 60
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Glycolic Acid 50 Unbuffered
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Level IV
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Salicylic Acid 35
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Glycolic Acid 50 Unbuffered
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Glycolic Acid 60
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Glycolic Acid 70 Unbuffered
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Glycolic Acid 50 Unbuffered
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Glycolic Acid 70 Unbuffered
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Glycolic Acid 30 Unbuffered
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Glycolic Acid 70 Unbuffered
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