La Roche-Posay vs RoC — side by side, no bias.
Our pick
Retinol Correxion Deep Wrinkle Serum
9/10 · RoC
| Effaclar Serum | Retinol Correxion Deep Wrinkle Serum | |
|---|---|---|
| Brand | La Roche-Posay | RoC |
| Category | serum | serum |
| Editor Rating | 8.6/10 | 9/10 ★ |
| Category | serum | serum |
| Texture | Lightweight liquid serum | Lightweight serum |
| Finish | Quick-absorbing, refined | Smooth, firmed |
| Skin Types |
| Targets |
| Pros |
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| Cons |
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| Verdict | LRP's modern blemish-prone hero — a triple-acid stack that pairs 1.5% salicylic acid (BHA), glycolic acid (AHA), and 0.45% Capryloyl Salicylic Acid (LHA, the brand's patented lipo-hydroxy acid derivative) in a single bottle, buffered with niacinamide and the brand's Selenium-rich Thermal Spring Water. The pH sits low enough to keep the BHA + AHA active, but the inclusion of the larger LHA molecule — which sits on the skin surface longer and exfoliates more gradually — softens the irritation curve compared to a straight-up glycolic serum. Reports of 60% of users seeing fewer blemishes in 8 days are the brand's own data, but the mechanism (pore-deep BHA + surface-renewing AHA + slow-release LHA) is mechanistically sound. The denatured alcohol up the deck makes it skip-it for very dry or rosacea-prone skin, but on combo-to-oily it absorbs in seconds and layers beautifully under Effaclar Duo or Toleriane Double Repair. | The OG retinol serum — RoC has been stabilizing retinol since the 1960s and this formula shows six decades of expertise. |
