Fractional Carbon Dioxide Laser for Keratosis Pilaris: A Single-Blind, Randomized, Comparative Study

Table 3

Assessment of pigmentation by nontreating dermatologists.

Grading	⁢4 weeks of follow-up,		⁢12 weeks of follow-up,
	Side A	Side B	Side A	Side B
0 (no improvement)	13	14	13	16
1 (1–25% improvement, minimal)	2	6	1	4
2 (26–50% improvement, moderate)	5	—	5	—
3 (51–75% improvement, good)	—	—	1	—
4 (>75% improvement, excellent)	—	—	—	—

Side A: fractional CO₂ laser treated side.
Side B: control side.