COSRX Low pH Good Night Soft Peeling Gel vs Secret Key Lemon Sparkling Peeling Gel
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.

COSRX — Low pH Good Night Soft Peeling GelFull breakdown →

Secret Key — Lemon Sparkling Peeling GelFull breakdown →
| COSRX Low pH Good Night Soft Peeling Gel | Secret Key Lemon Sparkling Peeling Gel | |
|---|---|---|
| Step | Mask | Mask |
| Price | $16 | $10 |
| Best landed cost | $16 | $14.99 |
| Rating | ★ 4.7 (19) | ★ 4.2 (290) |
| Evidence grade | B | C |
| Korea signal | — | — |
| Hero ingredients | PHA (gluconolactone) | — |
| Best for | Texture, Dullness | Texture, Dullness |
| Skin types | Oily, Combination, Normal, Sensitive | Oily, Combination, Normal |
| Texture | gel | gel |
| Tone note | All tones | All tones |
| Fragrance-free | ✓ | ✗ |
| Fungal-acne safe | ✗ | ✗ |
| US stock | ✓ | ✓ |
Our read: COSRX Low pH Good Night Soft Peeling Gel carries the stronger evidence grade (B); Secret Key Lemon Sparkling Peeling Gel 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.