Lotion P50T

Lotion P50 by Biologique Recherche is a cult-favorite exfoliating toner renowned for its transformative effects on skin texture, clarity, and radiance. Developed in the 1970s, its name reflects its purpose: “P” for “peeling” and “50” representing the 50 days, two full skin cycles, needed to achieve optimal results.

Formulated specifically for delicate climates and sensitive, reactive skin types, a balance long revered in Asian skincare markets which Lotion P50T was originally designed for - Lotion P50T provides all the iconic strength of Biologique Recherche's signature acid complex without the irritation. Powered by a blend of mild lactic acid, urea, niacinamide, and botanical purifiers like burdock and horseradish extracts, it gently accelerates cell turnover while strengthening the skin barrier. And now, skincare enthusiasts everywhere can experience this legendary formula: Lotion P50T is finally available worldwide.

LOTION P50W VS LOTION P50T

Choose Lotion P50W if: Your main issue is redness, flushing, or high skin reactivity. It’s ideal for building up skin tolerance when you are new to active acid toners.

Choose Lotion P50T if: Your skin is sensitive or easily irritated, but also experiences excess oil, shine, or clogged pores. P50T gives you sebum-regulating, pore-purifying benefits with the gentlest possible touch.

CLINICAL STUDY

In a 28-day study conducted under dermatological supervision, 20 men and women (ages 18 to 65, average age 38) tested the product across all skin types, including a 65% sensitive skin panel. Participants applied the formula twice daily to the face, neck, and décolleté.

Key Findings:
- Zero Irritation: 100% of participants demonstrated high tolerance, with no adverse reactions reported throughout the study.
- Proven Oil Control: Instrumental measurements showed a statistically significant 28% reduction in surface sebum by Day 28 compared to baseline (Day 0).

Exfoliating:

AHAs (Alpha Hydroxy Acids): Features Lactic Acid as the primary AHA—a gentle, hydrating acid that dissolves dead skin cell bonds on the skin's surface without causing deep irritation.

BHAs (Beta Hydroxy Acids): Included via Salicylic Acid derivatives (such as Sodium Salicylate) to break down oil, clear out clogged pores, and provide natural anti-inflammatory benefits.

Cider Vinegar (Acetum): A signature P50 ingredient that purifies surface bacteria, regulates oil production, and naturally adjusts the formula's pH to protect the skin's acid mantle.

Citric Acid: A mild secondary AHA that works in tandem with Lactic Acid to balance the product’s pH while providing subtle surface smoothing and brightening.

Urea: A powerful keratolytic exfoliant that softens keratin to shed dead, flaky skin cells while simultaneously acting as a deep-penetrating humectant.

Moisturising:

NMF (Natural Moisturizing Factors): A skin-identical hydration complex that mimics the skin’s natural fluid balance to prevent tightness or moisture loss during acid application.

Sebum-Regulating:

Horseradish Extract (Cochlearia Armoracia): A botanical purifier rich in natural glucosinolates that offers strong antibacterial properties to help keep skin clear.

Burdock Root Extract (Arctium Lappa): Packed with antioxidants, essential minerals, and soothing compounds to calm inflammation and regulate excess sebum.