Missha Time Revolution The First Essence Review: The Original 'Glass Skin' Essence
Before 'glass skin' was a trend, it was a marketing claim from this exact bottle. Here's whether a 97% fermented-yeast essence still holds up against a decade of newer competition.
Missha's First Essence is one of the products that popularized the entire "essence" category outside Korea, sometimes credited as Korea's answer to Estée Lauder's Advanced Night Repair. It's now on its "5X" reformulation, and the core idea hasn't changed: a fermented-ingredient essence built almost entirely around one hero ingredient rather than a long actives list.
What "97% fermented yeast" means
The formula is built around galactomyces (a fermented yeast filtrate), similar in concept to the ingredient behind SK-II's much more expensive Facial Treatment Essence. Fermentation breaks ingredients down into smaller components that are theoretically easier for skin to absorb. It's worth being precise about the evidence here: galactomyces ferment filtrate has lab research behind it — cell-level studies showing it supports the skin barrier and dampens inflammatory markers in keratinocytes — but no published clinical trials on the essence itself, so "improved hydration, tone, and radiance" is a reasonable expectation from the mechanism and years of user reports, not a measured outcome. Either way it's a slow-build ingredient, not an overnight one.
Texture and how it applies
Watery, almost water-thin, applied with hands or a cotton pad and often patted in multiple thin layers rather than one thick one — this is the origin of the "7-skin method" some K-beauty routines use. It absorbs fast and doesn't interfere with the layers that follow.
Who it's genuinely good for
- Anyone wanting a "glass skin" style routine focused on hydration and radiance rather than targeting a specific concern like acne or pigmentation
- Skin that responds well to fermented ingredients — if snail mucin worked for you, galactomyces is a similar category
- People willing to commit to a few weeks of consistent use rather than expecting fast, visible results
Who might not need it
- It's priced higher than most essences in this category — if budget matters more than brand history, a simpler hydrating essence will get you most of the way there for less
- Doesn't target acne, texture, or pigmentation specifically — it's a general hydration-and-radiance step, not a treatment for an active concern
Where it fits in the routine
Essence is step 5 in the 10-step routine, right after toner and before serum. It's a genuine alternative to COSRX's snail mucin essence at this step — both are hydration/repair-focused rather than targeted treatments, so pick based on which ingredient your skin prefers.
Bottom line: it's a legacy product for a reason — not the flashiest essence on shelves now, but a genuinely well-formulated one that a decade of newer competitors still gets compared against.
References
Peer-reviewed sources for the ingredient claims above, retrieved from PubMed. Cite the linked DOI when reusing any of this.
- Galactomyces ferment filtrate potentiates an anti-inflammaging system in keratinocytes — J Clin Med, 2022 — in vitro
- Enhancement of skin barrier function and augmentation of epidermal cell-cell interactions by galactomyces ferment filtrate — J Dermatol Sci, 2024 — in vitro
- Transcriptomic analysis of human keratinocytes treated with Galactomyces ferment filtrate — J Clin Med, 2022 — in vitro
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