Paula's Choice dupes on Amazon

The Ordinary Niacinamide 10% + Zinc 1% ($6) for the 10% Niacinamide Booster ($53), about 92% less per ounce. Same active at the same strength: 10% niacinamide, second on both lists right after water, in a thin serum for pores, oil and uneven tone.

10% Niacinamide Booster: The Ordinary Niacinamide 10% + Zinc 1%, $6. Skin Perfecting 8% AHA Gel Exfoliant: The Ordinary Glycolic Acid 7% Exfoliating Toner, $13.50. Skin Perfecting 2% BHA Liquid Exfoliant: CeraVe BHA Exfoliating Facial Toner with Salicylic Acid & Niacinamide, $16.97. Skin Perfecting 2% BHA Liquid Exfoliant: PanOxyl Clarifying Exfoliant with 2% Salicylic Acid, $11.99. Skin Perfecting 2% BHA Liquid Exfoliant: Anua BHA 2% Gentle Exfoliating Toner, $18. 10% Azelaic Acid Booster: The Ordinary Azelaic Acid Suspension 10%, $12.20. CLINICAL 1% Retinol Treatment: CeraVe Resurfacing Retinol Serum, $16.44. C15 Super Booster 15% Vitamin C Serum: Prequel Lucent-C Brightening Vitamin C Serum, $22.99.

The cheaper alternatives here come from 5 brands: The Ordinary, for the 10% Niacinamide Booster, Skin Perfecting 8% AHA Gel Exfoliant, and 10% Azelaic Acid Booster; CeraVe, for the Skin Perfecting 2% BHA Liquid Exfoliant and CLINICAL 1% Retinol Treatment; PanOxyl, for the Skin Perfecting 2% BHA Liquid Exfoliant; Anua, for the Skin Perfecting 2% BHA Liquid Exfoliant; Prequel, for the C15 Super Booster 15% Vitamin C Serum. Each is matched to the Paula's Choice product it stands in for on format, finish or key ingredients, and sold on Amazon by Amazon.com or its own brand.

That depends on the product. 6 of the 60 Paula's Choice products we track have a dupe sold by Amazon.com or the dupe's own brand, at a median 74% less per ounce. Bought together, the 6 originals come to $262 and their dupes to $88.10. Each comparison names what the cheaper one gives up. The other 54 have no dupe here yet, so for those the original is the only one we can point to.

6% Mandelic + 2% Lactic Acid Liquid Exfoliant, Resist Advanced Replenishing Face Toner, SKIN BALANCING Pore-Reducing Niacinamide Toner, RESIST Perfectly Balanced Foaming Facial Cleanser, 25% Vitamin C Serum, CLINICAL 0.3% Retinol + 2% Bakuchiol Face Serum, Choice--CLEAR Acne Cleanser--For Facial Acne, CLINICAL 20% Niacinamide Vitamin B3 Face Serum, Pro-Collagen Peptide Plumping Face Moisturizer, RESIST SPF 30 Wrinkle Defense Mineral Sunscreen, Weightless Body Treatment 2% BHA Salicylic Acid, 5% Niacinamide Body Treatment, BOOST Hyaluronic Acid + Peptide Lip Booster, C5 Super Boost Eye Cream with 5% Vitamin C, CALM Nourishing Milky Toner for Sensitive Skin, CellularYouth Longevity Anti-Aging Face Serum, CLEAR Oil-Free Face Moisturizer, CLEAR Regular Strength Anti-Redness Exfoliating, CLEAR Salicylic Acid Exfoliating Body Acne Spray, CLINICAL Discoloration Repair Face Serum, Extra Care Oil-Free Face Sunscreen SPF 50, Omega Complex Face Cleansing Balm, Pro-Collagen Multi-Peptide Booster Face Serum, Pro-Collagen Peptide Firming Eye Serum, Pro Retinaldehyde Dual-Retinoid Face Serum, RESIST Barrier Repair Advanced Face Moisturizer, RESIST Hydrating Fluid Face Moisturizer SPF 50, RESIST Intensive Repair Retinol Face Moisturizer, RESIST Intensive Wrinkle-Repair Retinol Serum, RESIST Optimal Results Hydrating Face Cleanser, RESIST Pore Refining Treatment 2% BHA Exfoliant, RESIST Super Antioxidant Vitamin C Serum, RESIST Triple Active Total Repair Serum, Resist Weightless Advanced Repairing Face Toner, SKIN PERFECTING 1% BHA Exfoliating Gel Toner, SKIN PERFECTING 2% BHA Exfoliant Lotion, SKIN PERFECTING 25% AHA + 2% BHA Face Exfoliant, Skin Recovery Calming Toner for Sensitive Skin, SKIN RECOVERY Hydrating Treatment Face Mask, Skin Revealing Body Lotion 10% AHA, C15 Super Booster 15% Pure Vitamin C Serum, 5% Vitamin C Sheer Face Sunscreen SPF 50, BOOST Hyaluronic Acid Booster Face Serum, C5 Super Boost Face Moisturizer, CALM Intensive Face Moisturizer, CALM Ultra-Gentle Face Cleanser, CLEAR Ultra-Light Hydrating Face Sunscreen, RESIST Skin Restoring Moisturizer SPF 50, SHINE STOPPER Matte Finish Oil Control Primer, SKIN BALANCING Invisible Finish Gel Moisturizer, SKIN BALANCING Oil-Reducing Cleanser, SKIN PERFECTING BHA 9 Spot Treatment, SKIN RECOVERY Replenishing Face Moisturizer, SKIN PERFECTING 4% BHA Exfoliating Serum Toner. A pair only goes up when the cheaper product matches on format, finish or key actives and is sold on Amazon US; nothing clears both bars yet.