✶serum

7.0

Su:m37

Secret Essence

Name: Su:m37 Secret Essence
Brand: Su:m37

serumluxury

Overall score7.0

Su:m37 Secret Essence scores 7.0/9.8 overall. It ranks highest in ingredient transparency (8.5) and formulation safety (8.0).

✶ Hero ingredients

#2Butylene Glycol

Lightweight humectant and solvent

#3Methyl Gluceth-20

Draws in moisture

#4Glycerin

One of the most effective humectants

Score breakdown

Overall

7.0

Hydration Efficacy5.5

Irritation Risk7.7

Active Ingredient Strength4.2

Ingredient Transparency8.5

Formulation Safety8.0

Estimated — based on ingredient analysis. Scores refine as user reviews are added.

Scores last verified: July 2026

What makes Su:m37 Secret Essence stand out

Su:m37 Secret Essence is a solid serum with an overall score of 7.0/9.8. Positioned in the luxury bracket, it delivers a well-rounded formulation that balances efficacy with gentleness. The formula leads with Butylene Glycol, Methyl Gluceth-20, Glycerin — ingredients that support the skin barrier and moisture levels.

It performs well on low irritation risk (7.7). On the flip side, active ingredient concentration is on the lighter side.

Is this right for you?

Great for

✓Sensitive skin — low irritation risk with a gentle formulation
✓Safety-conscious shoppers — clean formulation with minimal flags
✓Ingredient-aware buyers — transparent, well-documented formula

Key ingredients

✶
Butylene Glycol
Draws in moisture — #2 in the INCI list
✶
Methyl Gluceth-20
Draws in moisture — #3 in the INCI list
✶
Glycerin
Draws in moisture — #4 in the INCI list
✶
Glycereth-26
Draws in moisture — #7 in the INCI list
✶
Peg-60 Hydrogenated Castor Oil
Softens and smooths — #9 in the INCI list

Full ingredient list

20 ingredients — listed in INCI order (highest concentration first)

Compare with similar products

Ingredient breakdown

Draws in moisture5
Works on your skin5
Other ingredient2
Keeps the product fresh2
Softens and smooths2
Holds the formula together2
Added scent1
Formula balancers1