Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

19 questions · 19 findings · 1 reviews · Skin

No studies found 12 · 63.2%GRADE not reported 0 · 0%Very low 6 · 31.6%Low 1 · 5.3%Moderate 0 · 0%High 0 · 0%

Chemical peeling vs placebo or no treatment

Serious or severe adverse events N of participants with positive severe adverse events · people with acne scars

It is very uncertain whether chemical peeling changes serious or severe adverse events N of participants with positive… compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Chemical peeling vs combined chemical peeling plus any active intervention

Participant‐reported scar improvement (long‐term) · people with acne scars

It is very uncertain whether chemical peeling changes participant‐reported scar improvement (long‐term) N of participants… compared with combined chemical peeling plus any active intervention (very low certainty).

1 finding from 1 review

Chemical peeling vs combined chemical peeling plus any active intervention

Participant‐assessed adverse events (short‐term) N of participants with adverse events · people with acne scars

It is very uncertain whether chemical peeling changes participant‐assessed adverse events (short‐term) N of participants… compared with combined chemical peeling plus any active intervention (very low certainty).

1 finding from 1 review

Chemical peeling vs needling

Participant‐reported scar improvement (long‐term) · people with acne scars

The review found no eligible studies for this question.

1 finding from 1 review

Chemical peeling vs needling

Participant‐reported scar improvement (short‐term) N of participants with > 50% improvement in acne scars · people with acne scars

It is very uncertain whether chemical peeling changes participant‐reported scar improvement (short‐term) N of participants… compared with needling (very low certainty).

1 finding from 1 review

Chemical peeling vs needling

Investigator‐assessed adverse events (short‐term) · people with acne scars

Chemical peeling showed no clear difference in investigator‐assessed adverse events (short‐term) N of participants… compared with needling (low certainty).

1 finding from 1 review

Chemical peeling vs needling

Participant‐assessed adverse events (short‐term) N of participants with positive adverse events · people with acne scars

It is very uncertain whether chemical peeling changes participant‐assessed adverse events (short‐term) N of participants… compared with needling (very low certainty).

1 finding from 1 review

Chemical peeling vs needling

Patient satisfaction Number of satisfied patients · people with acne scars

It is very uncertain whether chemical peeling changes patient satisfaction N of satisfied participants compared with needling (very low certainty).

1 finding from 1 review