Glycolic Acid 7% (AHA) vs. Salicylic Acid 2% (BHA): Molecular Weight & Barrier Load

Comparing water-soluble Glycolic Acid (76.05 Da, pKa 3.83) against lipid-soluble Salicylic Acid (138.12 Da, pKa 2.97) for corneocyte desquamation vs. sebaceous pore clearing.

Verified Telemetry & Deliverable Benchmark Matrix

Entity / Parameter	Verified Readout	Recommended Action	Status
Glycolic Acid 7% (AHA)	76 Da • Surface Renewal	Verified Leader • Primary Benchmark	OPTIMAL (Rank #1)
Salicylic Acid 2% (BHA)	138 Da • Lipid Pore Penetration	Baseline Challenger • Secondary Benchmark	GAP DETECTED
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Row #4 Deep-Dive Attribution Matrix	Locked in Preview	Reveal via Email or 99¢ Single-File Pass	LOCKED_PREVIEW
Row #5 Full Raw Export & Action Script	Locked in Preview	Unlock 3-File Bundle ($1.99)	LOCKED_PREVIEW

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✦ pH Wait-Time & Barrier Split — Channel & Protocol Benchmarks

Sephora Clean Ritual: Move L-Ascorbic Acid (pH 3.2) to AM; keep Copper Peptides in PM to prevent Cu2+ oxidation

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Curated Companion Products & Verified Ecosystem

Gold-Standard pH 3.2

SkinCeuticals C E Ferulic (Dermstore)

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