Secret Essence (5th generation)

KR release Oct 8, 2026

The fifth version of Su:m37's fermented essence, a brand staple since 2009.

LG H&H's fermentation-focused brand Su:m37° announced the fifth generation of its Secret Essence on October 8, 2026. The essence first came out in 2009, and the brand says more than 3.35 million bottles have sold since.

The headline number is 8,700 hours: that's how long the base ingredient is fermented. The new formula is built on 90% fermented liquid and adds the brand's own CYTOSIS ingredient and a finer "melting ceramide." It comes in 50 ml and 100 ml. In Korea it's sold at the Su:m37° online store, Olive Young and department stores. A launch event in Seoul's Yongsan district on October 15 is open to the public from 3 to 7 p.m.

In the US: no store link for this launch yet. Same brand on Amazon →

Source: LG press release (Korean) ↗. Photo: © Su:m37 / LG H&H press release. For information only — not medical or skincare advice. Check the ingredient list for your skin.

From the same brand on Amazon

Not the new launch above: an existing Su:m37° product sold in the US.

GATGOOUN PICKSu:m37°Secret Essence (30 ml)

Su:m37°

Secret Essence (30 ml)

Su:m37 has just renewed its Secret Essence in Korea as a fifth-generation formula. The US Amazon listing is a 30 ml (1.01 fl oz) bottle listed as sold by LG Beauty Official. It names two parts of the formula, a Cyto-ferm Activator and a Liquid Ceramide Complex, on a naturally fermented base. It is a watery essence used after cleansing and toner, before serum and cream. The listing does not say which generation of the formula it is, so the bottle may differ from the new Korean one.

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