Sum37 Summa

The Rosh Summa Elixir is sum37's fermented botanical concentrate, positioned as the most advanced expression of the brand's slow-fermentation philosophy. The name combines 'rosh' - a Korean phonetic rendering of rose or rosé, suggesting floral and luxe connotations - and 'summa,' which references the sum or total of the fermentation process. Together, the name signals a line that uses the full concentration of sum37's fermented plant actives rather than a subset used in the brand's everyday lines.

The Elixir complex appears across the skincare and makeup pieces in this collection, providing a through-line from the Essence Secreta to the Golden Lipstick. The fermented actives are intended to work at the cellular level, supporting skin renewal and luminosity over regular use.

The Rosh Summa Elixir Essence Secreta 150ml is the core essence step in the Rosh Summa routine, applied after cleansing and before the treatment lotion or repair essence. At 150ml, it is a generous size for a luxury-tier essence, giving it a reasonable lifespan at daily twice-daily use. 'Secreta' suggests a secret or concentrated formula, indicating this is denser than a standard essence.

The Essence Secreta uses a fermented elixir complex in a texture that is heavier than a toner but lighter than a serum, occupying the preparation and initial treatment step simultaneously. Patting it in with warm hands after cleansing allows the elixir's actives to penetrate effectively before the subsequent treatment steps are applied.

The Rosik Summa Elixir Skin Softener 150ml is a toner-weight prep liquid in the Rosh Summa family, positioned as the first step before the Essence Secreta. 'Skin softener' is the Korean beauty term for a first-step toner that softens the skin surface to improve absorption. At 150ml, it offers the same generous format as the Essence Secreta, ensuring both first steps carry enough volume for extended daily use.

In a full Rosh Summa sequence, the Skin Softener goes first after cleansing, followed by the Essence Secreta, then the Repair Essence, and finally the Elixir Treatment. This four-step sequence layers increasingly concentrated Rosh Summa actives onto prepared skin, which is the intended use pattern for the luxury tier.

The Rosh Summa Repair Essence 30ml is the targeted concentrate in the Rosh Summa line. At 30ml, it is much smaller than the 150ml prep and treatment products, positioning it as a precision treatment rather than an all-over step. The 'Repair' designation indicates the focus is on correcting existing damage - sun damage, early aging signs, uneven texture - rather than preventive hydration.

This is the product to apply before the Elixir Treatment (moisturizer) and after the Essence Secreta. Its concentrated 30ml format gives it the highest active density in the line per application. Using it only on specific concern areas (around the eyes, on spots, on fine lines) rather than spreading across the entire face extends the bottle's lifespan and ensures the concentration is directed where repair is most needed.

The Rosh Summa Elixir Treatment 150ml is the final skincare step in the Rosh Summa routine, sitting at the emulsion or light moisturizer position. At 150ml, it is the largest bottle in the line and the most generous size relative to its function. The treatment texture is a medium-weight emulsion that seals the layers applied underneath without adding a heavy occlusive barrier on top.

Positioning an elixir treatment at 150ml rather than the typical 50-75ml for luxury moisturizers signals that sum37 expects regular daily use of this product rather than occasional treatment use. This makes the Treatment the practical daily driver of the Rosh Summa routine while the Repair Essence handles the intensive correction layer underneath it.

The Set of 2 Rosh Summa bundles two Rosh Summa Elixir pieces, typically the Essence Secreta and the Treatment or the Skin Softener and the Essence Secreta. This set is the most cost-effective way to enter the Rosh Summa line because it pre-matches two complementary steps and prices them below individual purchase.

For users new to the Rosh Summa Elixir range, the set removes the uncertainty of choosing which two steps to start with by offering a pre-curated pair. Check the current product listing for the specific pieces included in the current two-set version, as the pairing can change between production batches.

Two makeup pieces extend the Rosh Summa Elixir complex into color cosmetics. The Rosh Summa Velvet Foundation 30ml uses the elixir base in a cushion or pump foundation with a velvet-matte finish, providing a makeup step that shares the same skincare actives as the Rosh Summa treatment routine. The Rosh Summa Golden Lipstick 3.6g delivers the elixir complex to the lip area in a lipstick format with a golden-toned pigment.

Both makeup pieces allow the elixir actives to continue treating skin during wear rather than simply sitting on the surface as a separate product layer. For Rosh Summa routine users, adding the foundation or lipstick completes the elixir system across the full face without layering a non-matching base over carefully applied skincare steps.

The Rosh Summa Elixir line is designed for mature skin, dry-to-combination skin, and any skin type that prioritizes repair and luminosity over oil control. The Elixir Treatment at 150ml is a medium-weight emulsion that works well for normal, dry, and combination-normal skin year-round. Oily skin can use the Essence Secreta and Repair Essence but may find the Elixir Treatment heavy in summer; substituting the Water Pool line for the final step on humid days keeps the routine balanced.

Sensitive skin generally tolerates fermented formulas well, but the concentrated actives in the Repair Essence warrant a patch test before full-face application. The Skin Softener and Essence Secreta are more broadly compatible because they are less concentrated. Starting with the two-piece set rather than the full four-step lineup minimizes the chance of overwhelming reactive skin on first introduction.