IOPE Retinol Expert 0.1% vs Dr. Althea 0.1% Gentle Retinol Serum
Same shelf, different answers — here's the whole picture in one table. Click either product for full ingredient decode, skin-twin reviews and every retailer's landed cost.
| IOPE Retinol Expert 0.1% | Dr. Althea 0.1% Gentle Retinol Serum | |
|---|---|---|
| Step | Serum | Serum |
| Price | $42 | $22 |
| Best landed cost | $46.10 | $26.99 |
| Rating | ★ 4.5 (3,400) | ★ 4.5 (340) |
| Evidence grade | A | B |
| Korea signal | #8 serum · Olive Young Korea (seed) | — |
| Hero ingredients | Retinol, Adenosine | Retinol |
| Best for | Aging, Texture | Aging, Texture |
| Skin types | Normal, Dry, Combination | Oily, Dry, Combination, Normal |
| Texture | light | light |
| Tone note | All tones | All tones |
| Fragrance-free | ✓ | ✗ |
| Fungal-acne safe | ✗ | ✗ |
| US stock | ✗ import only | ✓ |
Our read: IOPE Retinol Expert 0.1% carries the stronger evidence grade (A); Dr. Althea 0.1% Gentle Retinol Serum wins on landed cost. If your concerns match both, evidence is the tiebreaker we'd use.
Prices and rankings are seed data pending weekly verification. Take the 60-second quiz and both products get a personal match score on their pages.