Sum37 Energy
sum37 Energy covers the brand's Time Energy and Thyme Energy lines: fermentation-based Korean skincare targeting skin renewal, firmness, and clarifying care. The range of 34+ products includes toners, emulsions, sweet creams, peeling gels, cleansing sheets, and concentrated base serums across both lines. sum37 is built on slow fermentation science, and the Energy lines apply that approach specifically to time-reversal and clarity concerns.
By Skinsli editorial Updated
Buying guide
sum37 Energy Lines: Time Energy and Thyme Energy Guide
sum37 is a Korean fermentation beauty brand with two Energy sub-lines available on skinsli: Time Energy, focused on skin renewal and firmness, and Thyme Energy, using thyme fermentation for brightening and exfoliation. The 34+ products cover the full routine from cleanser to lotion.
What the sum37 Energy lines are about
sum37 uses slow fermentation of natural ingredients as its core science. The name sum37 refers to the 37 natural ingredients in the brand's base complex, fermented slowly over time to maximize bioavailability. The Energy lines apply this fermented ingredient science to two specific goals: skin time-reversal (Time Energy) and clarifying brightness through thyme fermentation (Thyme Energy).
Both lines are positioned in the mid-to-premium tier of the Korean fermentation beauty market, alongside brands like Missha and Sooryehan, but with a stronger K-beauty laboratory identity than traditional hanbang lines.
Time Energy: the renewal and firmness line
The Time Energy range includes the Resetting Toner 170 ml, Bright Clarifying Toner 170 ml, Resetting Emulsion 120 ml, Bright Emulsion 120 ml, Suite Lotion 350 ml, Cleansing Sheet 50 sheets, and a Time Energy 2 sets bundle. The Resetting products focus on skin renewal and turning back visible aging signs. The Bright products in the sub-series add a clarifying, brightening dimension.
The Suite Lotion 350 ml is the largest volume format in the line and is the most economical per ml for regular users. The Cleansing Sheet 50 sheets provides a convenient wipe-off cleanser step for daily use without running water.
Thyme Energy: clarifying and exfoliating with thyme
The Thyme Energy sub-range uses fermented thyme extract as its primary active. Thyme contains rosmarinic acid and flavonoids with documented antioxidant and antimicrobial activity. In skincare formulation, thyme fermentation concentrates these compounds and reduces their molecular size for better absorption.
Available products include the Sweet Cream 200 ml, Peeling Gel 100 ml, and Darjeeling Base 35 ml. The Peeling Gel provides a physical-chemical exfoliation step using the thyme extract alongside mild mechanical balling action. The Sweet Cream 200 ml is the moisturizing finish for the Thyme Energy routine. The Darjeeling Base 35 ml is a concentrated first-step essence in the line.
Toners compared: Resetting versus Bright Clarifying
The Time Energy Resetting Toner 170 ml focuses on renewal - it prepares skin for absorption and targets dullness from accumulated dead cells and environmental stress. The Time Energy Bright Clarifying Toner 170 ml adds a brightening-specific angle for skin with persistent uneven tone or post-acne marks.
Both are 170 ml at the same step in the routine. Use the Resetting Toner if your primary concern is texture and renewal; use the Bright Clarifying Toner if tone unevenness is the more visible concern. Layering both is not recommended as they overlap in function.
Emulsions: Resetting versus Bright
The Time Energy Resetting Emulsion 120 ml and Bright Emulsion 120 ml mirror the toner split at the moisturizing layer. Both use a light emulsion texture that adds moisture without the density of a cream. Emulsions are an intermediate step between toner and cream in a Korean routine.
The Resetting Emulsion is the standard moisture step for the Time Energy line. The Bright Emulsion pairs with the Bright Clarifying Toner when brightness is the focus. Match the emulsion to the toner you use for formula consistency within the line.
Time Energy 2 sets: the bundle option
The Time Energy 2 sets bundle includes two products from the Time Energy range in one purchase. Sets are priced below individual retail prices for the same products. This is the recommended starting point for users new to the Time Energy line who want to test two steps without committing to the full range at full price.
The exact contents may vary by bundle configuration, but typically combine a toner and an emulsion from the same renewal or bright sub-series.
Which skin types suit the sum37 Energy lines
Time Energy Resetting products target all skin types with renewal or firmness concerns, particularly skin showing texture irregularities and early aging. The Bright variant of the line suits combination and normal skin with tone concerns. Thyme Energy suits oily-combination and acne-prone skin where the antibacterial and clarifying properties of thyme extract provide active benefit.
Dry skin types should treat the Thyme Energy Peeling Gel as a once or twice weekly step rather than a daily exfoliant. The Sweet Cream 200 ml is suitable for all skin types as the moisturizing finish regardless of which other steps you use.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
How many sum37 Energy products does skinsli carry?
skinsli carries 34+ sum37 Energy products across the Time Energy and Thyme Energy lines, including toners, emulsions, sweet cream, peeling gel, suite lotion, cleansing sheets, Darjeeling base, and bundle sets.
What is the difference between sum37 Time Energy and Thyme Energy?
Time Energy is the renewal and firmness line, using sum37's fermented botanical complex to address aging signs, dullness, and skin texture. Thyme Energy uses fermented thyme extract as its primary active for brightening, exfoliation, and clarifying. Thyme Energy is more suited to acne-prone or congested skin; Time Energy is more broadly anti-aging focused.
Which sum37 Time Energy toner should I choose: Resetting or Bright Clarifying?
The Resetting Toner 170 ml targets skin renewal and texture. The Bright Clarifying Toner 170 ml adds a brightening-specific focus for uneven tone and dullness. If your primary concern is firmness and texture, choose Resetting. If you see persistent pigmentation or post-acne marks, the Bright Clarifying is more targeted.
How often should the sum37 Thyme Energy Peeling Gel 100 ml be used?
The Thyme Energy Peeling Gel combines physical and chemical exfoliation. For oily and combination skin, two to three times per week is appropriate. For normal or dry skin, once or twice weekly is safer to avoid over-exfoliation. Daily use is not recommended for any skin type.
What is the sum37 Time Energy Suite Lotion 350 ml and how does it compare to the emulsions?
The Suite Lotion 350 ml is a larger-volume lotion-format moisturizer in the Time Energy line. At 350 ml it lasts considerably longer than the 120 ml emulsions and is better value per ml for daily users. The Suite Lotion may have a slightly different texture profile than the emulsions - typically a slightly thicker lotion versus a thinner emulsion consistency.
What does the sum37 Thyme Energy Darjeeling Base 35 ml do?
The Darjeeling Base 35 ml is a concentrated first-step essence or base serum in the Thyme Energy line. It delivers a high concentration of the thyme fermentation actives at the first leave-on step, before the toner or lotion layers. The 35 ml size is compact and highly concentrated.
When is the sum37 Time Energy Cleansing Sheet 50 sheets most useful?
Cleansing sheets are most practical for travel, gym use, or situations where a sink-and-water cleanser is inconvenient. At 50 sheets per pack, one pack covers approximately 25 double-wipe uses. They are a complement to a standard cleansing routine, not a permanent replacement for water cleansing at home.
What is included in the sum37 Time Energy 2 sets bundle?
The Time Energy 2 sets bundle includes two products from the Time Energy range, typically a toner and emulsion from the same Resetting or Bright sub-series. The bundle is priced below the combined individual cost. It is a good starting point for new users who want to test the line across two routine steps.
Is the sum37 Thyme Energy Sweet Cream 200 ml suitable for oily skin?
The Sweet Cream 200 ml is the moisturizing finish in the Thyme Energy line and is formulated to complement the clarifying and exfoliating steps in that line. For oily skin, the thyme line's overall approach is well-suited, though the cream texture should be applied in a lighter amount. The 200 ml size provides good use time for daily application.