Expert Dermatologists Reach Consensus on Best Skincare Ingredients for 7 Common Concerns
A Delphi study of 62 cosmetic dermatologists identifies 23 evidence-backed topical ingredients for wrinkles, acne, dark spots, and more.
Summary
A rigorous Delphi consensus study involving 62 cosmetic dermatologists across 43 centers narrowed a list of 318 skincare ingredients down to 23 with strong expert agreement. Key ingredients achieving consensus include retinoids (fine lines, acne, dark spots, large pores, oily skin), vitamin C (fine lines, dark spots), niacinamide (redness, dark spots), azelaic acid (acne, dark spots), benzoyl peroxide (acne, oily skin), glycolic acid (acne, dark spots), salicylic acid (acne, oily skin), and mineral sunscreen (fine lines, redness). Most of these recommendations are supported by level 1b or 2b clinical evidence, offering physicians and consumers a reliable, expert-vetted framework for selecting topical skincare products.
Detailed Summary
Choosing effective skincare products is notoriously difficult given the thousands of ingredients marketed for common skin concerns. Until now, no formal expert consensus existed to guide both clinicians and consumers on which topical ingredients are most reliably beneficial. This study addresses that gap directly.
Researchers conducted a structured Delphi consensus process, beginning with a literature review that generated a long list of 318 candidate skincare ingredients. An initial expert panel of 17 dermatologists reduced this to 83 salient candidates. A second, larger panel of 62 cosmetic dermatologists from 43 centers then completed two rounds of Delphi surveys to reach consensus.
The process yielded consensus on 23 ingredients mapped to seven common skin concerns: fine lines and wrinkles, acne, redness, dark spots, large pores, dry skin, and oily skin. Standout findings include retinoids earning consensus across five categories — the broadest endorsement of any ingredient. Vitamin C and mineral sunscreen were highlighted for anti-aging and photoprotection. Niacinamide emerged as a top pick for redness and pigmentation, while salicylic acid and benzoyl peroxide dominated acne and oily skin recommendations.
For longevity-minded individuals, skin aging is a visible biomarker of systemic aging processes. The ingredients endorsed here — particularly retinoids and vitamin C — have mechanisms tied to collagen synthesis, oxidative stress reduction, and cellular turnover, all relevant to skin healthspan. Most consensus ingredients were backed by level 1b or 2b evidence, lending scientific credibility beyond typical marketing claims.
Caveats include the fact that some recommendations still rely on expert opinion rather than randomized trial data, and individual skin type, tolerance, and comorbidities were not fully addressed. Nonetheless, this consensus provides a practical, evidence-informed reference for both physicians and patients navigating the crowded skincare landscape.
Key Findings
- Retinoids achieved consensus for 5 skin concerns: fine lines, acne, dark spots, large pores, and oily skin.
- Vitamin C and mineral sunscreen were top consensus picks for anti-aging and photoprotection.
- Niacinamide reached consensus for reducing redness and dark spots with strong evidence support.
- 23 of 318 ingredients achieved expert consensus across 62 dermatologists at 43 centers.
- Most consensus ingredients are supported by level 1b or 2b clinical evidence.
Methodology
A two-round Delphi consensus survey was conducted with 62 cosmetic dermatologists across 43 centers, following an initial literature review and expert panel reduction of 318 ingredients to 83. Consensus ingredients were then cross-referenced with published clinical evidence and graded by evidence level.
Study Limitations
Some consensus ingredients are supported by expert opinion rather than high-level randomized controlled trial data. The study does not account for individual skin type variability, tolerability differences, or interactions between ingredients. Conflict of interest disclosures among some panel members may introduce minor bias toward commercially available products.
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