Clinical Study
Effect of 82% Lactic Acid in Treatment of Melasma
Table 4
Physician visual analogue scale with lactic acid treatment at different durations.
| | 0 weeks | 2 weeks | 4 weeks | 6 weeks | 8 weeks | 10 weeks | 12 weeks | 16 weeks | 20 weeks | 24 weeks |
| VAS 0 | 12 | 9 | 8 | 6 | 4 | 4 | 3 | 3 | 3 | 3 | No improvement | 60% | 45% | 40% | 30% | 20% | 20% | 15% | 15% | 15% | 15% |
| VAS 1 | 6 | 8 | 9 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 0–25% improvement | 30% | 40% | 45% | 50% | 55% | 55% | 55% | 55% | 55% | 55% |
| VAS 2 | 2 | 3 | 3 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 25–50% improvement | 10% | 15% | 15% | 20% | 25% | 25% | 30% | 30% | 30% | 30% |
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