Ingredient comparison
4-n-Butylresorcinol vs Kojic Acid: which one is right for your skin?
Same comparison whichever way you searched it: Kojic Acid vs 4-n-Butylresorcinol.
Short answer: Honestly, either one works. Choose by your skin type and what your routine already has.
| Compared | 4-n-Butylresorcinol | Kojic Acid |
|---|---|---|
| Potency | Similar | Similar |
| Evidence | moderate evidence | moderate evidence |
| Time to see it work | 4–8 weeks | Never measured |
| Irritation risk | Moderate | Moderate |
| Clogs pores | Low | Low |
| In pregnancy | Ask your doctor | Ask your doctor |
| On a label | usually effective at 0.1-1% | usually effective at 1-2% |
So which should you pick?
These two are close enough to be near-interchangeable. Honestly, either one works. Choose by your skin type and what your routine already has.
Better for your concern
- Dark spots and uneven toneEither
Based on their scores in the knowledge base. "Either" means both hold their own for that goal.
No known clash between these two. If you want both, you can layer them; introduce one at a time.
Check these two in the tool →Or decode a whole product label →From our dataNeither has to be the answer: 58 other ingredients in our glossary share a family with these two.
4-n-Butylresorcinol vs Kojic Acid, answered
Which is stronger, 4-n-Butylresorcinol or Kojic Acid?
They are close in strength: 4-n-Butylresorcinol and Kojic Acid score similarly on efficacy. Choose by skin type rather than power.
Is 4-n-Butylresorcinol or Kojic Acid better for sensitive skin?
Both carry a similar irritation risk (moderate). Patch test either one before using it daily.
Can you use 4-n-Butylresorcinol and Kojic Acid together?
There is no known clash between them. You can layer them if you like, just introduce one at a time.
General guidance, not medical advice. Read the full pages on 4-n-Butylresorcinol and Kojic Acid.