Ducray Keracnyl Purifying Lotion — Efficacy 4.0/5.0, Safety 3.8/5.0 | DemythSkin
++++
[ DemythSkin Verdict ]
Ducray Keracnyl Purifying Lotion

Ducray Keracnyl Purifying Lotion

TonerAcne, Oily skin, Pores
Efficacy
Strong
4.0 / 5.0
Safety
Mostly Safe
3.8 / 5.0
System Verdict
Solid leave-on AHA/BHA toner for oily acne-prone skin, but fragrance and unknown concentrations drag down the scores. Efficacy scored 4.0/5 due to strong combo of Glycolic Acid (position 3, likely 5-10%), Salicylic Acid (position 14, likely 0.5-2%), and Lactic Acid in leave-on format for pore decongestion and mattifying; assumes optimal pH 3.0-4.0 for AHA/BHA efficacy (supported by Sodium Hydroxide/Acetic Acid buffering), boosted by soothing Bisabolol and witch hazel, but lacks disclosed % and synergy like niacinamide.
Active Ingredients Detected
S Tier: Gold StandardsHigh Clinical Proof | Skin-Transformative
Glycolic AcidSalicylic Acid
A Tier: Good BasicsProven Results
Aqua (Water)Bisabolol
B Tier: Supporting IngredientsPromising Ingredients
Hamamelis Virginiana Leaf WaterSodium HydroxidePPG-1-PEG-9 Lauryl Glycol EtherAcetic AcidCetrimonium BromideLactic AcidPropylene GlycolSodium Chloride
D Tier: Potential IrritantsBe Cautious
Fragrance (Parfum)MethylparabenPhenoxyethanol
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DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.