Overnight Exfoliating Treatment
Reviewed by SerumTruth Editorial · Updated July 2026
One of the best value plays on the whole board: a properly dosed, disclosed glycolic treatment for the price of a coffee. Ease in slowly and pair it with daytime sunscreen.
- Evidence24 / 30
Strength of the research behind the key actives
- Glycolic Acid: strong evidence
- Lactic Acid: moderate evidence
- Salicylic Acid: moderate evidence
- Score is the average of the key actives’ evidence grades.
- Potency18 / 25
Dosed at studied levels, not fairy-dusted
- Glycolic Acid (8.1%): dosed at a studied level
- Lactic Acid (1%): present, but below a studied dose
- Salicylic Acid (0.1%): below the 1% line, treated as fairy-dusted
- Potency tracks how strongly the actives are dosed, led by the strongest, not how many there are.
- Delivery & stability14 / 20
Delivery tech + packaging that protects fragile actives
- Delivery: standard
- Packaging: clear dropper
- No fragile actives here, so packaging barely moves the score.
- Formulation8 / 10
Disclosure, active breadth, and ingredient generation
- 3 of 3 actives disclose a concentration
- 3 key actives (breadth credit caps at 3)
- No current-generation or synergy bonus
- Value15 / 15
What a month of use costs vs. the category
- About $2 per month to use
- $6 for 30 ml, used about once a day (about 0.3 ml each time), so a bottle lasts about 3.3 months
- Frequency is set by Glycolic Acid, which is used no more than 7x a week, so a bottle stretches further
- Band: $6/month or less earns full marks, $60/month or more hits the floor.
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What’s inside
| Active | Disclosed | Dose |
|---|---|---|
| Glycolic Acid | 8.1% | Studied |
| Lactic Acid | 1% | Light |
| Salicylic Acid | 0.1% | Below 1% line |
A leave-on night treatment with 8.1% glycolic acid as the hero, plus 1% lactic and 0.1% salicylic in support, all three disclosed, in a clear glass dropper. Glycolic does the real resurfacing work while the lactic and salicylic are minor supporting notes rather than second doses.
How it’s delivered
Air- and light-sensitive actives (vitamin C, copper peptides) lose potency fast in the wrong packaging, so delivery and the bottle are scored, not just what’s on the label.
The actives, explained
Cosmetic information for general education, not medical advice. The SerumProof score reflects our reading of publicly available research and formulation disclosures. See how scoring works.