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Biologique Recherche’s Lotion P50 is often referred to as a “holy grail” skincare product or "a facial in a bottle". Formulated over 40 years ago, it is known for its exfoliating, purifying, and skin-balancing properties that deliver results. Lotion P50 is a must-have for every skincare enthusiast and a cult favorite of professionals and beauty editors around the world. Read more to learn what all the fuss is about, how to use Lotion P50 effectively, key benefits, and answer all your questions about this amazing product.
What Is Biologique Recherche Lotion P50?
Lotion P50 is a gentle yet potent customized exfoliating toner for all skin types with 6 different formulas for face, scalp and body. This cult favorite skincare product is a blended combination of exfoliating acids, alpha hydroxy acids (AHAs), beta hydroxy acids (BHAs). It also includes a mix of other active ingredients such as sulfur, vinegar, and birch extract. Together, these highly active ingredients work to exfoliate the skin’s surface, improve texture, balance ph, control sebum and refine pores, leaving the complexion smoother, with a more radiant glow.
How do I use the Biologique Recherche Lotion P50?
To see best results consistency is key. Secondly, you must choose the Lotion P50 formula best suited for your skin type. We recommend twice daily use in the AM and PM after a proper cleansing of the face.
- Step 1 Cleanse: You should always cleanse your face in the morning and evening with a gentle cleanser that is not too harsh and suited for your skin type.
- Step 2 Apply Lotion P50: Apply your Lotion P50 onto a cotton pad and gentle swipe the pad over your face, neck and décolleté. Swipe, press and push but never rub as that can cause irritation. Concentrate on your trouble spots.
- Step 3 Follow with Serum & Moisturizer: Once the toner has absorbed into the skin follow with an application of your Quintessential and Targeted Serums. Finish with your customized face cream and SPF.
Note: If you're new to acid exfoliation, start with a few applications per week and gradually increase frequency as your skin builds tolerance.
What are the key benefits of using Lotion P50?
- Exfoliates the Skin: The blend of AHAs and BHAs helps remove dead skin cells, for smoother less congested skin.
- Balances pH Levels: Lotion P50’s formula is designed to restore and balance your skin's natural pH without drying the skin out. A balanced ph allows the skin to regenerate the skin barrier for a healthier complexion.
- Tighten Pores: Lotion P50 minimizes and tightens pores by promoting cell turnover and eliminating congestion.
- Improves Smoother Skin Texture: Lotion P50 can help improve overall texture to minimize the appearance of acne scars, reduce hyperpigmentation and even out skin tone for a more glowing complexion.
- Boosts Skin Radiance: Lotion P50 encourages brighter skin by exfoliating dead skin cells and promoting healthier skin circulation.
Can I use Lotion P50 if I have sensitive skin?
Yes, but you must use the correct formula. If you have sensitive or reactive skin, start with the mildest version Lotion P50W. Only use it 1-2 times a week to allow your skin to adjust and build up a tolerance to the active acids in the formula. After a few months of use you can step up to a stronger formula if needed.
Can I use Lotion P50 during the day?
Yes we recommend twice daily use. However, if using it in the daytime, make sure to apply a SPF sunscreen after. Exfoliating acids and exposure to the sun can cause a reaction and redness.
Does Lotion P50 help with acne?
Yes, its salicylic acid content (BHA) helps to control sebum secretion and decongest acne-prone skin. The formula clears out pores, removes impurities to minimize breakouts and helps to reduce inflammation.
How often should I use Lotion P50?
We recommend twice daily use, but It does depend on your skin's tolerance. If it is your first time using an acid based exfoliator we suggest you start with 2-3 times a week and gradually increase frequency once your skin adjusts.
How many formulas of the Lotion P50 are there available?
There are six different Lotion P50 formulas customized to different skin types. The Lotion P50 1970 (with phenol), now discontinued in the USA and the Lotion P50 no phenol formula is for combination acne prone and oily skin.
The Lotion P50V 1970 (with phenol), now discontinued in the USA and the Lotion P50V (no phenol) is best suited for skin that is dry and dehydrated.
The Lotion P50W without phenol is the gentlest formula and your choice for reactive and sensitive skin to prevent irritation, inflammation or redness.
Lotion P50 PIGM 400 without phenol is formulated to exfoliate and and target sun spots, dark spots, age spots, and hyper-pigmentation for a more even skin tone.
Biologique Recherche’s exfoliating Lotion P50 toner collection delivers multiple skincare benefits in just one single step. For more than 40 years this premium skincare product has been a staple in many beauty enthusiasts daily skincare routines. There are few products out there that do so much. Lotion P50 exfoliates, balances ph, decongests skin, removes impurities and dead skin cells, controls sebum secretion and evens out skin tone for your best skin ever. Lotion P50 is everything your skin needs and more.
What is phenol?
Phenol is a chemical antiseptic which helps to purify the skin and kill bacteria and other skin impurities. The original Lotion P50 1970 formulas contain the phenol ingredient in a very small percentage. Less than 1% of the formula. The non-phenol P50 formulas are considered just as effective with 99% of the remaining ingredients plus added active botanicals. Phenol can often be too aggressive and lead to over exfoliation.
Are the Lotion P50 1970 formulas available to purchase in the USA?
The Lotion P50 1970 formulas are no longer available in the USA as of June 2025. Biologique Recherche has discontinued the formulas containing phenol due to new FDA regulations and restrictions on cosmetic skincare products. These products are also banned in Europe and Asia.
Is there a replacement product for the Lotion P50 1970 products?
Yes there are the corresponding non-phenol formulas; Lotion P50 No Phenol, Lotion P50V No Phenol, Lotion P50W No Phenol and the Lotion P50 PIGM 400 which does not contain phenol. If you are looking for a step up in exfoliation and plumping we recommend using the Lotion MC 110 as a second step in your toner application routine. This product will intensify the exfoliation of the Lotion P50 while also plumping and toning the skin. apply after your P50 application and follow with your favorite serums.
For more information or to Shop the full Biologique Recherche Skin, Hair and Body collections visit www.paullabrecque.com.
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