Secret Key vs Su:m37° — side by side, no bias.
Our pick
Secret Essence
8.8/10 · Su:m37°
| Starting Treatment Essence Rose Edition | Secret Essence | |
|---|---|---|
| Brand | Secret Key | Su:m37° |
| Category | essence | essence |
| Editor Rating | 8.3/10 | 8.8/10 ★ |
| Category | essence | essence |
| Texture | Slightly more emollient essence | Clear watery essence |
| Finish | Hydrated, softened | Luminous absorbed |
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| Verdict | The Rose Edition of the Starting Treatment Essence: same 94% galactomyces core, Rosa Centifolia flower water added as the second hero. Subtly more hydrating, slightly more expensive, marginally nicer scent. For dry-skin users who liked the original but wanted more cushion, this is the thoughtful upgrade. For oily or acne-prone skin, the original is still the better pick. | LG's answer to SK-II Pitera — a naturally fermented essence that takes 50+ days in controlled fermentation tanks. The glow is real, the texture is water-thin, and the ferment is genuinely different from galactomyces. If SK-II is the J-beauty first treatment essence, Su:m37° is the K-beauty equivalent. |
