Biologique Recherche vs Caudalie — side by side, no bias.
Our pick
Lotion P50 1970
9.2/10 · Biologique Recherche
| Lotion P50 1970 | Glycolic Peel Mask | |
|---|---|---|
| Brand | Biologique Recherche | Caudalie |
| Category | exfoliant | exfoliant |
| Editor Rating | 9.2/10 ★ | 8.4/10 |
| Category | exfoliant | exfoliant |
| Texture | Watery exfoliating lotion | Creamy clay |
| Finish | Refined, balanced, smoothed | Polished, bright |
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| Verdict | Biologique Recherche's legendary exfoliating lotion — and the most polarising product in luxury skincare. First formulated in 1970 by Dr. Philippe Allouche, P50 is a multi-acid exfoliating toner that does what most products try to do separately: lactic acid (AHA, gentle resurfacing), salicylic acid (BHA, pore-penetrating), phytic acid (mineral chelator, brightening), niacinamide (sebum regulation, tone-evening), sulfur (antimicrobial), and the original 1970 formula's hallmark ingredient — phenol. The vinegar base creates the unmistakable scent that converts and repels in equal measure. The 1970 version is the original-recipe, sold via authorised estheticians outside the EU (the EU-sold formulation differs slightly to comply with cosmetic regulations on phenol concentration). Used 1-2x daily on a cotton pad after cleansing — never under SPF without practitioner guidance. At $80 for 150ml, premium pricing, but the per-use cost is reasonable given the multi-acid concentration and the genuine category-defining status. | Caudalie's grape-pedigree resveratrol meets a proper glycolic peel mask. Leave it on 10 minutes, rinse — your skin will feel like you had a facial. Weekly. |
