IOPE Retinol Expert 0.1% vs Some By Mi Retinol Intense Reactivating 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%Full breakdown →

Some By Mi — Retinol Intense Reactivating SerumFull breakdown →
| IOPE Retinol Expert 0.1% | Some By Mi Retinol Intense Reactivating Serum | |
|---|---|---|
| Step | Serum | Serum |
| Price | $42 | $25 |
| Best landed cost | $46.10 | $25 |
| Rating | ★ 4.5 (3,400) | ★ 4.4 (3,600) |
| Evidence grade | A | B |
| Korea signal | #8 serum · Olive Young Korea (seed) | #21 serum · Olive Young Korea (seed) |
| Hero ingredients | Retinol, Adenosine | Retinol, Panthenol (B5) |
| Best for | Aging, Texture | Aging, Texture |
| Skin types | Normal, Dry, Combination | Normal, Combination, Oily |
| 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); Some By Mi Retinol Intense Reactivating 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.