The Ordinary Mandelic Acid 10% + HA 30ml – Gentle AHA Exfoliating Serum for Texture Dullness & Uneven Tone

✨ Key Benefits✔️ 10% Mandelic Acid (Largest AHA Molecule, 152 Dalton):​ Bitter-almond-derived AHA with roughly 2× the molecular size of glycolic acid (76 Dalton). Slower, more even corneal penetration = superficial dermal peeling without the hotspot sting of 7% glycolic or 30% AHA/BHA Peeling Solution. TO caps it at 10% because beyond that you just re-create glycolic-strength indirect peeling with none of mandelic's gentleness.✔️ Sodium Hyaluronate Crosspolymer + Glycerin + Propanediol:​ Cross-linked HA sits on the surface longer than standard HA, offsetting the trans-epidermal water loss acid exfoliation can cause. Glycerin + propanediol keep the serum from feeling like a stripping toner—why it reads "exfoliant + light hydrator" rather than pure peel.✔️ Tasmannia Lanceolata (Tasmanian Pepperberry) Extract:​ The same anti-irritant in TO's Lactic Acid serums. Suppresses AHA sting/redness without lowering mandelic's pH (~3.5–3.7) or efficacy. Makes first-time acid users far less likely to quit from burn.✔️ Antibacterial Bonus Glycolic Lacks:​ Mandelic acid has intrinsic antimicrobial activity against Cutibacterium acnes and mild sebum-regulation—so it helps congested/oily skin and PIH-prone acne, not just dullness. This is why derm reviewers rank it above lactic for acne-inclined sensitive skin.✔️ Alcohol-Free / Oil-Free / Silicone-Free / Fragrance-Free / Vegan:​ Phenoxyethanol family preserved (ethylhexylglycerin + caprylyl glycol + 1,2-hexanediol), no denatured alcohol, no parfum, no dimethicone, no essential oils. Fungal-acne safe (propanediol + polysorbate 20 are FA-neutral). One of the safest direct acids in your 26-piece deck.✔️ Beginner-to-Intermediate AHA:​ Not a weekly 10-min rinse-off (that's AHA 30%+BHA 2% Peeling Solution); this is a leave-on nightly-or-rotational serum. Build 2–3×/week → every other night → nightly over 2–3 weeks. Darker Fitzpatrick tones and rosacea-adjacent users favor it specifically because lower rebound-PIH risk than glycolic.🧴 How to UseWhen:​ PM only. Once daily max.Amount:​ 3–5 drops for face + neck.Apply:​ Cleanse → (Milky Toner / Marine Hyaluronics / AA+B5 optional, but let skin dry 3–5 min after watery steps) → TO Mandelic Acid 10% + HA​ press on dry skin → wait 20–30 min before layering Buffet / 377 / Eucerin / retinoid / Pink Serum / Panthenol Gel / B5+. TO allows diluting with a non-acid serum (Marine Hyaluronics, AA+B5) at first to build tolerance.Routine Integration:Gentle AHA night (rotate):​ Cleanser → Milky Toner → Marine/AAB5 → TO Mandelic 10% + HA​ (Mon/Wed/Fri) → wait 20 min → Pink Serum → Panthenol Gel → (optional B5+)vs COSRX Clear Pad (BHA):​ Clear Pad = 1% betaine salicylate daily gentle BHA; Mandelic = 10% AHA 2–3×/week. Rotate: Clear Pad Mon/Wed/Fri, Mandelic Tue/Thu, rest Sun. Never same night as Garnier Anti Acne Booster (BHA+AHA) or TO L-AA Powder + direct acid.vs Garnier Anti Acne Booster:​ Don't stack—both exfoliate; pick one night Mandelic, one night Garnier, never same step.Pure C rule:​ No TO L-AA Powder / Garnier Overnight 10% Pure C same night as mandelic (pH fight + over-exfoliation). AM Pure C / PM Mandelic is fine.Retinoid same night?​ TO says avoid stacking strong actives; if you must, mandelic → wait 20–30 min → retinoid (advanced only, buffer with Pink Serum).Patch Test:​ Forearm 24h mandatory—AHA on compromised barrier burns even at 10%.Consistency:​ Smoother texture 2–4 weeks; dullness lift 1–2 weeks; PIH surface refinement 6–8 weeks; no frost/peel/flake (mandelic is subtle, not dramatic).💡 Ideal ForSensitive / reactive / rosacea-adjacent skin that finds 7% glycolic or 30% Peeling Solution too hot.Fitzpatrick III–VI wanting AHA benefits with lower PIH-rebound risk​ than glycolic.Acne-prone combo skin wanting gentle surface turnover + mild antibacterial action.AHA beginners building tolerance before graduating to lactic 10% / glycolic 7%.Not ideal for:​ Active eczema/psoriasis flares or peeling-retinoid barrier (repair with B5+ first); users wanting instant glass-skin peel (this is slow architecture, not 30% Peeling Solution); strict "no direct acid" philosophy (NIOD Non-Acid Acid Precursor is the alt); those who skip AM SPF (AHA sun-sensitivity is non-negotiable); expecting spot-erasing like 377/Eucerin (mandelic supports tone, doesn't block tyrosinase at root).