Idéalia - Sérum activateur d'éclat

Both are gel-serums with hyaluronic acid and the same texture-building polymer, but Vichy's key actives are adenosine and capryloyl salicylic acid (skin-renewing/brightening) which this HA-B5 serum completely lacks.

This is a luxury firming-silicone serum with a completely different active philosophy (peptide-like piperidinepropionic acid, silicones) and no adenosine, salicylic acid, or glycyrrhizate found in Vichy's formula.

A 'bio' oil-and-gluconolactone anti-aging serum with sodium hyaluronate, but missing Vichy's signature adenosine, capryloyl salicylic acid, and glycyrrhizate combo that drive the radiance effect.

This is an oil-and-Q10 antioxidant lifting serum; it shares no meaningful actives with Vichy's adenosine/salicylic-acid/glycyrrhizate radiance formula beyond basic preservatives and citric acid.

This is a night cream-style anti-wrinkle emulsion with butter/oils and no adenosine, salicylic acid, or glycyrrhizate — an entirely different formula type and purpose from Vichy's radiance serum.