Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

957 questions · 979 findings · 250 reviews

No studies found 159 · 16.2%GRADE not reported 75 · 7.7%Very low 264 · 27%Low 303 · 30.9%Moderate 138 · 14.1%High 40 · 4.1%

Benzoyl peroxide vs placebo or no treatment

Participant's global self‐assessment of improvement (long‐term data) · participants with acne

Benzoyl peroxide may leads to higher participant's global self‐assessment of improvement (long‐term data) compared with placebo or no treatment (low certainty).

1 finding from 1 review

Benzoyl peroxide vs erythromycin

Participant's global self‐assessment of improvement (long‐term data) ‐ not measured · participants with acne

The review found no eligible studies for this question.

1 finding from 1 review

Benzoyl peroxide vs salicylic acid

Participant's global self‐assessment of improvement (long‐term data) ‐ not measured · participants with acne

The review found no eligible studies for this question.

1 finding from 1 review

Benzoyl peroxide vs adapalene

Participant's global self‐assessment of improvement (long‐term data) · participants with acne

Benzoyl peroxide showed no clear difference in participant's global self‐assessment of improvement (long‐term data) compared with adapalene (low certainty).

1 finding from 1 review

Benzoyl peroxide vs clindamycin

Participant's global self‐assessment of improvement (long‐term data) · participants with acne

Benzoyl peroxide showed no clear difference in participant's global self‐assessment of improvement (long‐term data) compared with clindamycin (low certainty).

1 finding from 1 review

Azelaic acid vs adapalene

Participants' global self‐assessment of acne improvement · participants with acne

It is very uncertain whether azelaic acid changes participants' global self‐assessment of acne improvement Improved to… compared with adapalene (very low certainty).

1 finding from 1 review

Azelaic acid vs tretinoin

Participants' global self‐assessment of acne improvement Good to excellent improvement (long term: treatment duration > 8 weeks) · participants with acne

Azelaic acid showed no clear difference in participants' global self‐assessment of acne improvement Good to… compared with tretinoin (moderate certainty).

1 finding from 1 review

Salicylic acid vs pyruvic acid

Participants' global self‐assessment of acne improvement Good to excellent improvement (medium term: treatment duration from 5 to 8 weeks) · participants with acne

It is very uncertain whether salicylic acid changes participants' global self‐assessment of acne improvement Good to… compared with pyruvic acid (very low certainty).

1 finding from 1 review

Salicylic acid vs tretinoin

Participants' global self‐assessment of acne improvement Moderate to excellent improvement (long term: treatment duration > 8 weeks) · participants with acne

Salicylic acid showed no clear difference in participants' global self‐assessment of acne improvement Moderate to… compared with tretinoin (low certainty).

1 finding from 1 review

Glycolic acid (alpha‐hydroxy acid) vs salicylic‐mandelic acid

Participants' global self‐assessment of acne improvement Fair to good improvement (long term: treatment duration > 8 weeks) · participants with acne

Glycolic acid (alpha‐hydroxy acid) showed no clear difference in participants' global self‐assessment of acne improvement Fair to… compared with salicylic‐mandelic acid (low certainty).

1 finding from 1 review

Azelaic acid vs benzoyl peroxide

Participants' global self‐assessment of acne improvement Good or very good improvement (long term: treatment duration > 8 weeks) · participants with acne

Azelaic acid probably leads to lower participants' global self‐assessment of acne improvement Good or… compared with benzoyl peroxide (moderate certainty).

1 finding from 1 review

Azelaic acid vs clindamycin

Participants' global self‐assessment of acne improvement Good or very good improvement (long term: treatment duration > 8 weeks) · participants with acne

Azelaic acid showed no clear difference in participants' global self‐assessment of acne improvement Good or… compared with clindamycin (low certainty).

1 finding from 1 review