Skin Perfecting 2% BHA Liquid Exfoliant
Reviewed by SerumTruth Editorial · Updated July 2026
The reference BHA of the category: one disclosed, well-dosed active for the appearance of clearer, more refined-looking pores, with the longest track record of any liquid exfoliant. Almost nothing does the core job better.
- Evidence21 / 30
Strength of the research behind the key actives
- Salicylic Acid: moderate evidence
- Score is the average of the key actives’ evidence grades.
- Potency25 / 25
Dosed at studied levels, not fairy-dusted
- Salicylic Acid (2%): dosed at a clinical, high-end level for its category
- 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: opaque tube
- No fragile actives here, so packaging barely moves the score.
- Formulation6 / 10
Disclosure, active breadth, and ingredient generation
- 1 of 1 actives disclose a concentration
- 1 key active (breadth credit caps at 3)
- No current-generation or synergy bonus
- Value13 / 15
What a month of use costs vs. the category
- About $16 per month to use
- $37 for 118 ml, used about once a day (about 1.75 ml each time), so a bottle lasts about 2.2 months
- Frequency is set by Salicylic 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 |
|---|---|---|
| Salicylic Acid | 2% | Clinical |
A watery 2% salicylic acid leave-on with green tea extract, disclosed and held at a working pH, in an opaque plastic bottle you decant onto a pad or fingers. It is technically a liquid exfoliant rather than a serum, and salicylic acid is neither air nor light sensitive, so the packaging is a non-issue.
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.