Comparison
Compare evidence before buying.
Side-by-side scores from cited research. Narrow by category, then pick the exact products you want to weigh against each other.
All productsSupplements (20)Skincare (17)Fitness (16)Sleep (15)Heart Health (10)Cognitive Enhancement (8)Nutrition (8)Recovery (8)Bone & Joint Health (5)Mental Health (5)Metabolic Health (5)Immune Health (4)Biomarker Testing (3)Wearables (3)Gut Health (2)Hormonal Health (2)Oral Health (2)Respiratory Health (2)Vision Health (2)Air Quality (1)Blood Testing (1)Cold Therapy (1)Ergonomics (1)Hair Health (1)Microbiome Testing (1)Red Light Therapy (1)Saunas (1)Water Quality (1)Women's Health (1)
Choose products to compare1/4 selected
| Product | Retinol 0.5% Anti-Aging Serum (Encapsulated) Paula's Choice · Skincare |
|---|---|
| Evidence Score | 61Good |
| Safety Score | 71Good |
| Effectiveness | 56Emerging |
| Research Confidence | 68Good |
| Product Fit | 51Emerging |
| Evidence directness | Category-level evidence |
| Papers indexed | 3 |
| Top verified claim | Topical retinol improves fine lines and the appearance of naturally aged skin in controlled trials. |
| Price | $58.00 |
| Open evidence page |
Scores reflect cited research, not medical advice. Highlighted cells mark the strongest score per row among the products shown.
