OneSkin
Beautyoneskin.co
Average
out of 100
OneSkin's OS-01 Hair Scalp Serum page has a solid structural foundation — clear product name and price above the fold, a well-designed subscription tier system, and star ratings near the title — but it underperforms on the dimensions that matter most for a premium $62 science-backed serum. The brand's strongest dimension is clarity, where pricing and product identity are immediately legible. The single most critical gap is mobile performance: a 47 PSI score with a 12.2-second LCP means a large share of cold mobile visitors never see the page at all, and the clinical proof imagery that could justify the price point is invisible on mobile.
Top Finding
PSI mobile score is 47/100 — below the 50-point threshold, scoring 0 pts on the PSI component. LCP of 12.2 seconds is critically slow; a first-time cold visitor on mobile will stare at a loading screen for over 12 seconds before the largest content element paints. CLS of 0.264 means layout shifts are occurring, which will cause mis-taps on the subscription radio buttons and CTA. FCP at 3.8s means even the first visible content is delayed.
mobile performance · critical
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Score breakdown across all 5 dimensions, every finding, prioritized fix list, and category benchmark position.