{"id":871965,"date":"2025-09-04T06:42:25","date_gmt":"2025-09-04T06:42:25","guid":{"rendered":"https:\/\/ukpostcode.org\/content\/?p=871965"},"modified":"2025-09-04T06:42:25","modified_gmt":"2025-09-04T06:42:25","slug":"p50-1970-vs-today-how-biologique-recherches-formula-has-changed-over-decades","status":"publish","type":"post","link":"https:\/\/ukpostcode.org\/content\/p50-1970-vs-today-how-biologique-recherches-formula-has-changed-over-decades\/","title":{"rendered":"P50 1970 Vs. Today: How Biologique Recherche’s Formula Has Changed Over Decades\u00a0\u00a0"},"content":{"rendered":"

Biologique Recherche released Lotion P50 in 1970. It is a high concentration of acid-based cleanser intended to speed up skin turnover within 50 days; hence the name P-50. Its initial version, which later fans came to call P50 1970, achieved cult success with its effects on blemishes, skin texture and skin radiance.<\/span>\u00a0<\/span><\/p>\n

The distinguishing part of this formulation was that it contained phenol, in addition to lactic acid, salicylic acid, sulfur, niacinamide, vinegar, botanical extracts including myrrh, onion, and burdock root. The <\/span>antiseptic property<\/span><\/a> of the phenol and the distinctive sting and pungent aroma that comes with it made it a recognizable sensation to long-time users, which they came to love and adore. Although effective, the formula may be harsh, resulting in redness, burning or numbness, but its devotees would crown it as having the power of the facial in a bottle due to the dramatic effects of one use.<\/span>\u00a0<\/span><\/p>\n

Here are the key differences between P50 1970 vs. today\u2019s formulas.<\/span>\u00a0<\/span><\/p>\n

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